sudden; abrupt; unexpected; unforeseen
wonderful; marvelous; strange; strangely enough; oddly enough; for some reason
misfortune; bad luck; ill luck; ill fortune
immorality; injustice; adultery; illicit relationship; murdering one's teacher or a government official (one of the eight unpardonable crimes)
good-for-nothing; spineless; gutless; spiritless; feckless; pluckless
wrong; bad; not allowed; not possible; failing grade
slowness; inertness; inability; lack of talent; dullness
lawless; outrageous; insolent; rude; inexcusable; unpardonable
pout; displeasure; ill humor; ill humour; sullenness
unhappiness; misfortune; ill luck
not serious; frivolous; insincere; unsteady
uneven; irregular; non-uniform; unsorted; odd; miscellaneous
dissatisfaction; discontent; displeasure; complaint; unhappiness
barren; sterile; infertile; unproductive (e.g. discussion); fruitless
unlawful; illegal; unreasonable; outrageous; unjust
undutifulness to one's parents; lack of filial piety
nonviolence; non-harming; ahimsa
absence; nonattendance; nonappearance
unfair; unjust; wrongful; improper; unreasonable; unwarranted
unpleasant; disagreeable; displeasing; uncomfortable; unhappy
displeasure; discomfort; unpleasantness; indisposition; ailment
unnatural; artificial; affected; strained
impossible; incapable (of doing); incompetence; inability; impotence; having no solution (of an equation)
imbalance; disproportion; disparity; mismatch; asymmetry
inconvenience; inexpediency; unhandiness
unreliable; uncertain; indefinite; unclear
constant; persistent; indecisiveness; usual; normal
insufficiency; deficiency; shortage; dissatisfaction; discontent; complaint
unhappiness; sorrow; misfortune; death (usu. of a relative); bereavement
unclear; obscure; unknown; unidentified; ignorance; lack of wisdom
daring; fearless; intrepid; bold; tough
disadvantageous; harmful; unprofitable
bad; poor; inferior; delinquent; hoodlum; hooligan
unfairness; injustice; partiality
inexperienced; unfamiliar (with); unversed; lacking experience
discontent; dissatisfaction; complaint; grievance
ominous; sinister; unlucky; inauspicious
discomfort; inconvenience; poverty; want; inability; disability
dissatisfaction; discontent; disapproval; objection; complaint; protest
immovable; motionless; firm; Acala (Wisdom King); Fudō; fierce Buddhist deity
bad reputation; poor reception; unpopularity; disrepute
injustice; unfairness; wrongdoing; iniquity; impropriety; irregularity
bad condition; poor condition; disorder; failure; rupture; breakdown (e.g. of negotiations)
unfit; unsuitable; unmarketable
discord; (on) bad terms (with)
I'll write again soon (closure for a letter, etc.); more anon; sincerely yours; yours truly
immortality; eternal life; undeath; undead
inconvenient; inexpedient; unfavourable; wrong; improper; objectionable
disrespect; irreverence; impiety; blasphemy; profanity
wholeheartedly; with heart and soul; intently; with undivided attention; with intense concentration; single-mindedly
not asking (about); letting go unquestioned; disregarding; ignoring; overlooking
irregular; unseasonable; changeable; unsettled; abnormal
imperfect; incomplete; faulty; defective
immortal; undying; indestructible
discrepancy; discord; disagreement; mismatch; dissonance
dissent; disagreement; disapproval; objection; refusal
instability; insecurity; crankiness
absence; disregard; indifference
imprudent; indiscreet; immodest; indecent; inconsiderate; inappropriate
insufficient; inadequate; imperfect
economic slump; hard times; poor (business); dull; gloomy; cheerless
of uncertain meaning; ambiguous; cryptic; nonsensical; incomprehensible; perplexing
discordance; discrepancy (e.g. statistical); conflict; incongruity; inconsistency; mismatch
reluctant; unwilling; involuntary; unintentional; unintended; unlooked-for
unprepared; careless; imprudent; indiscreet
absurd; irrational; unreasonable; absurdity
dishonor; dishonour; disgrace; shame
flaw; defect; problem; inconvenient
carelessness; inattention; thoughtlessness; negligence
morbid; unhealthful; insalubrious
unbecoming; improper; unsuitable; ill-matched; unworthy of
poor crop; bad harvest; crop failure; low quality (e.g. of literary works)
neglect of one's social obligations; failure to perform one's social duties; dishonor; failure to pay back one's debt
sleepless vigil; night watch; vigilance
dissatisfaction; discontent; displeasure
contrary to one's wishes; gone awry; gone amiss; short of money; in financial difficulty
distaste; unsavoriness; unsavouriness
Very sincerely yours; (arch.) different
precept forbidding the taking of life; precept against killing; precept of ahimsa
disadvantage; handicap; unfavorable position
poor; pitiful; piteous; pitiable
irregular; unsystematic; unsteady; disorderly
disadvantage; handicap; drawback; inadvisability; inexpediency; loss
impure; adulterated; foul; mixed; dishonest
unsafe; insecure; careless; dangerous; incautious; imprudent
distrust; mistrust; insincerity; impiety; faithlessness
poor health; ill health; unhealthy
unclear; indistinct; obscure; opaque; inarticulate; dim
(examination) failure; rejection; disqualification
truancy; school non-attendance
omission; failure; incompleteness; irregularity; mismanagement; misconduct
clumsiness; awkwardness; ineptitude
insincerity; dishonesty; untruthfulness; bad faith
eternal; everlasting; unchangeable; invariant
nonparticipation; nonattendance
irrational; illogical; unreasonable; absurd; inconsistent
unsuitable; inappropriate; improper
discord; trouble; dissension; disagreement; friction; conflict
incorrect answer; wrong solution; incorrect interpretation
unfaithfulness; infidelity; unchastity
undefeated; unbeatable; invincible
bad job; poor workmanship; bungle
weak point; unskillfulness
non-conforming process; noncompliant; incompatible
uneven; irregular; non-uniform; unsorted; odd; miscellaneous
opaque; obscure; opacity; obscurity; unclear; unpredictable
inferior goods; defective product; defective goods
indeterminate form; undefined; indefinite; unstructured
discord; dissonance; cacophony; discord (in a relationship); disagreement; disharmony
unsuited; inappropriate; improper; undeserved
lack of virtue; immorality; vice; depravity; unworthiness
perennial youth; eternal youth
abstention; nonintervention; noninterference
irregular (schedule, service, etc.); indeterminate (length of time); staggered (payments)
uncertain; unreliable; inauthentic; insecure
perfidiousness; faithlessness; inconstancy; insincerity; falsehood
blur; blurred; indistinct
unsanitary condition; lack of hygienic care; inattention to hygiene; unhygienic conditions
idleness; lack of application; lazy study habits
unkindness; unfriendliness
immorality; iniquity; impropriety
disqualification; unfitness; noncompliance
disqualification; unfitness; noncompliance
incomplete combustion; imperfect combustion; being off one's game; not doing one's best; being unable to use all of one's strength
determination; conviction
inadequacy; inappropriateness; unfitness; impropriety
partial; incomplete; imperfect
undutifulness to one's parents; lack of filial piety; (arch.) (the crime of) cursing one's parents; (arch.) disowning one's child
inseparable; indivisible; undetachable
displeasure; ill humour; ill humor; pique
disused; unused; useless; wasteful; of no use
impiety; unbelief; infidelity
neglect of one's health; unhealthy living; intemperance
rejection (of an application)
deformity; distortion; disability; word written at the end of a letter
suspension; interruption; stoppage; tie-up; cessation
inaccurate; incorrect; inexact; imprecise
ignorance; inexperience; unfamiliarity
improper; inappropriate; unjust; unfair; unreasonable
disharmony; discord; dissonance; incongruity
war renunciation; anti-war; bout cancelled due to absence of one of the wrestlers
not permitting; not authorizing
sexual frigidity; insensitivity; indifference
imbalance; lack of balance; lopsidedness; disproportion; inequality; disparity
failure (e.g. of a bill, motion); falling through; rejection; miscarriage
nonprosecution; nonindictment
failure; poor result; disfavour; disfavor; unpopularity
nightless gay quarters; nightless city
dissent; disagreement; disapproval; objection; refusal
indiscretion; imprudence; rudeness; misbehavior; misconduct; misdeed
rare; extraordinary; unparalleled; unparallelled
unkindness; inhumanity; heartlessness
discontinuous; discontinuous
being unknown; not knowing; ignorance; foolishness
disapproval; disagreement
inconsistency; mismatch; nonconformity; unconformity
inaccurate; indistinct; imprecise; unclear; indecisive
dishonouring (a bill); dishonoring; bouncing (a cheque, check); non-payment
failure; abortive (attempt, action)
vague; ambiguous; noncommittal; off-point
thoughtless; indiscreet; lacking in common sense; rashness; betraying one's lack of judgment (judgement); absurd
noninvolvement; nonintervention; neutrality
emergency; unexpectedness
insubordination; disobedience
lack of uniformity; unevenness; imbalance; inequality; disproportion
destabilization; destabilisation
disgraceful; inauspicious; ill-omened; ominous; scandalous
unspecified; random; indefinite
inconsistent; illogical; unconvincing; not thorough; indefinite; half-way
ugly (of a person); plain; unattractive; (arch.) lacking ability; (arch.) incompetent
unchastity; misconduct; dissipation; fornication
misconduct; misbehaviour; impropriety; profligacy
point of dissatisfaction; complaint; gripe; issue
non-confidence; lack of confidence
lack of unity; inconsistency; disharmony
dishonesty; untruthfulness
uneasiness; uncertainty; anxiety; apprehension; restlessness; insecurity
uncertainty; indefiniteness
past forty; following right course
bad form or manners; indecency; impropriety
uncertainty; indeterminacy; unreliability; unauthenticity
irresolution; indecision; vacillation
disagreement; disapproval; objection; dissent; non-consent
difference; diversity; irregularity; disorder
disuse; not using; non-usage
unqualified person; ineligible person; unsuitable person; incompetent person
lack of faith; unbelief; impiety; infidelity
neglect of health; intemperance
indifference; lack of enthusiasm; inattentiveness
lack of talent; incompetency; ineptitude; one's own unskillfulness
unsuccessful candidate; rejected person
neither arising nor ceasing
lack of uniformity; unevenness; inequality; heterogeneous; nonuniform
inert; noble; neutral; inactive
evil; sin; vice; mischief
indisposition; emperor's illness; unhappiness
pending; unsettled; undecided
discontented element; discontented (grumbling) member
heartlessness; inhumanity
(Goedel's) incompleteness theorem
forbearance; omission; nonfeasance; inaction
less-than sign or greater-than sign (< or >); inequality sign
poor result; bad record; failure
irregularity; unevenness; asymmetry; lack of uniformity
dull; slow; sluggish; inactive; inanimate; quiet
dishonorable discharge; dishonourable discharge
unwise plan; bad policy; inexpediency
non-support; disapproval (e.g. in an opinion poll)
improper; inappropriate; illegitimate; unacceptable; unfair
small attendance; poor house
nonconductor (of heat or electricity)
police questioning (of a suspicious person); police checkup
bad reputation; poor reception; unpopularity; disrepute
not carrying (driver's license, passport, etc.); not having on one's person; nonpossession
safekeeping; not going outside; not letting outside
indiscretion; bad idea; thoughtlessness; indiscreetness
aplastic anemia; aplastic anaemia
unwritten; illiterate; uneducated; poor writing
impartiality; neutrality; fairness
non-existence; absence; lack
nothing increases or decreases (because all things are void)
person unfit for society; misfit
divorce; unrealized marriage prospects
insincerity; dishonesty; untruthfulness; bad faith
irregular; undisciplined; disorganized; disorganised; slipshod
disloyalty; unfaithfulness
ahimsa; abstinence from taking life; principle of non-violence in Jainism, Buddhism, Hinduism, etc.
disloyalty; unfaithfulness
anxiety neurosis; aporio-neurosis
misconduct; misbehaviour; impropriety; profligacy
vagrant; transient lifestyle
prohibition against double jeopardy; ne bis in idem
incomplete fracture; partial fracture
gloominess; gloom; questionable; unfair; underhand
Very sincerely yours; (arch.) different
faithlessness; insincerity
unreasonableness; absurdity; irrationality
having no fixed days off; having no regular closing days; having no regular holidays
lawlessness; violation of customs
Amoghasiddhi; Infallible Magic (a dhyani-Buddha)
in no hurry; nonessential (industry)
immunity from arrest (for Diet members, foreign diplomats, etc.); parliamentary immunity; legislative immunity; diplomatic immunity
unstable state; metastable state; quasistable state
nonexpansion; localization; localisation; nonaggravation
inconvenience; hard living
insincerity; unfaithfulness
sense of uncertainty; lack of clarity; indecisiveness
premenstrual dysphoric disorder; PMDD
premenstrual dysphoric disorder; PMDD
clumsiness; unskillfulness
disapproval; dissent; veto
not enrolling for compulsory schooling
rejected goods; rejected article; reject; seconds; second; off-grade goods
irregular shape; irregular form
misconduct; profligacy; licentiousness
dissident element (e.g. in a political party); discontented element
incomplete metamorphosis; hemimetabolism
unlawful trespass; occupying a property and refusing to leave
intolerance (to food, drug, etc.)
imbalance; disequilibrium
dissent; disagreement; disapproval; objection; refusal
no-confidence vote; vote of no confidence
I'll write again soon; more anon; sincerely yours; yours truly
agreement used to prevent unauthorized or faked divorce by couples in Japan in the future
Buddhist precept prohibiting the consumption of alcohol
nonvolatile component; nonvolatile constituent
precept forbidding one to speak untruthfully; precept of satya
of uneven quality; heterogenous
insulator; nonconductor; poor conductor
unqualified (incompetent) person; square peg in a round hole
inapparent infection; subclinical infection
infertility (esp. of animals)
concealment (e.g. of facts); nondisclosure
non-disclosure (of information)
precept of non-stealing; precept of achourya; precept of asteya
precept of marital chastity and sexual restraint; precept of brahmacharya
nonfarming land; untilled land
poor preparation; poor arrangements
irregular forces; guerrillas
negative reaction; unsuccessful vaccination
the principle of not resuming debate on an item in the same Diet session in which it has been voted down
principle holding that any matters left unresolved at the end of one Diet session are not to be carried over to the next
incomplete intransitive verb
infertility (esp. of plants)
unequal cleavage (embryology)
tax-exempt rice field (ritsuryō system)
statically indeterminate structure; redundant structure; statically indeterminate construction
Three Noes (former Taiwan policy of no contact, no negotiation and no compromise with China)
failure to observe safety regulations
person unfit for society; misfit
non-terminating decimal; infinite decimal
Pachinko Pachislot Security Information Organization; PSIO
unreasonable; irrational; illogical
inhuman; immoral; unreasonable; barbarity (one of the eight unpardonable crimes, incl. killing three people in one family, or dismembering a corpse)