(if) by some chance; by some possibility; in the unlikely event that; (unlikely event of) emergency; the worst(-case scenario)
unpleasant; disgusting; loathsome; shameful; scandalous
duty; function; office; mission; task
unsuitable; inappropriate; improper
violation; offense; offence; breach; transgression; infringement
to have something on one's mind; to have (undisclosed) reservations; to feel conflicted
tune; tone; vein; mood; condition; state of health
to grow senile; to be childish with age; to be mentally slow; to be befuddled; to play stupid; to say something stupid (oft. on purpose; esp. as part of a comedic routine)
or; either ... or; maybe; perhaps; some ... and others ...; sometimes ... and at other times ...
to entangle; to entwine; to pick a quarrel; to find fault; to be involved with; to be influenced by
to act (a part); to play (a role); to perform (a play, etc.); to put on (a production); to commit (a blunder); to disgrace oneself
thin; pale; light; watery; thin; weak (taste, etc.); little (affection, etc.) not much (of a presence)
listless; languid; sluggish; irritating; exasperating; tiresome
intelligence gathering; information gathering
whether or not (in phrases like "I don't know whether or not I can come")
to stick through; to force through; to spread throughout; to thoroughly diffuse; to make a path between two points; to proceed in a logical manner; to let pass
rest; recess; vacation; holiday; dormancy (of a silkworm prior to moulting)
(just) making sure; just to be sure; just in case; for caution's sake
hold; catch; connection; relationship; unease; discomfort
high rating; good reputation
to ignite; to set fire to; to spark (an incident, etc.); to inflame (a situation, etc.)
really; very; extremely; (not) anything; (not) at all; (not) a bit
inconvenience; inexpediency; unhandiness
one's station in life; one's personal history; one's circumstances; one's lot; one's destiny; one's future
comprehension; consent; understanding; OK; roger (on two-way radio)
useless; no future in it; doesn't make sense; having no point
same; similar; (just) like; equal
to turn aside adroitly; to dodge
to loosen; to slacken; to relax (attention, efforts, etc.); to let down (one's guard); to relax (a rule); to ease (e.g. restrictions)
to stop walking; to pause
daily routine; daily work; daily lesson
drink at home with one's evening meal; dinner-time drink
time; thyme; time out (e.g. in sport)
one long cylindrical thing; one film, TV show, etc.; one version; one book; a certain book; ippon; one point
to have a taste for; to be fond of; to enjoy (in moderation); to be modest; to be prudent; to watch (e.g. one's behaviour)
to become public; to become known; to come out in the open; to be formal; to be official
drinking party; get-together
naturally; of course; understandably
to invite; to ask (someone to do); to tempt; to lure; to induce (tears, laughter, sleepiness, etc.); to arouse (e.g. sympathy)
friendship; companionship; fraternity; comradeship