key; lock; key (to a problem); clue
to wrench open; to prize open; to pick (lock)
forcibly; against one's will
to push in; to force into; to break in (e.g. into a house); to intrude
overbearing; coercive; pushy; forcible; high-handed
to desire; to wish for; to expect; to see; to command (a view of)
dot; spot; mark (in an exam, etc.); grade; point (in a game); score; point (in geometry)
failure; mistake; blunder
even; even if; even though; because of; on the grounds that
to reach; to amount to; to be up to the task; to come up to; to compare with; to be a match (for)
stability; steadiness; equilibrium
at the most; at best; to the utmost; as much as possible; as much as one can
to misfire; to come to naught; to end in failure; to fizzle out; to fall flat
such ... as; or some such
accident; incident; trouble; circumstances; reasons
riskiness; (level of) danger
high; tall; expensive; high-priced; high (level); above average (in degree, quality, etc.)
fate; destiny (esp. as a mysterious force that binds two people together); relationship (e.g. between two people); bond; family ties; affinity; opportunity
connection (to a person, place, etc.); relation; affinity
dangerous; risky; in danger; in jeopardy; uncertain; unreliable
foreign substance; foreign body; strange object; unusual object; (arch.) dead body; (arch.) corpse
to raise; to elevate; to do up (one's hair); to fly (a kite, etc.); to launch (fireworks, etc.); to land (a boat); to show someone (into a room)
ghastly; gruesome; appalling; lurid
many problems; various problems
mad (with grief, love, etc.); crazy; out of one's mind; on the verge of insanity
craving; longing; thirsting
uncontainable; irrepressible; uncontrollable
curiosity; inquisitiveness
inquisitive mind; spirit of inquiry; spirit of enquiry
taking refuge; finding shelter; evacuation; escape; seeking safe haven
one; 1; best; first; foremost; beginning; start
technology; engineering; technique; skill; art; craft
study; research; investigation
cruise; navigation; sailing
completion; conclusion; perfect (tense, form, aspect)
to attack; to assail; to succeed (someone in a post, role, etc.); to make a sudden visit
official name; formal name
unit; (musical) group; band
model; type (e.g. of machine, goods, etc.); type; style; mold (mould); template; kata (standard form of a movement, posture, etc. in martial arts, sport, etc.)
given that ... it is only natural that ...; ... being the case, it is unavoidable that ...; (precisely) because ...; contrary to expectations ...
to create; to bring forth; to invent; to think up and bring into being; to give birth to; to bear
probe; inquiry; enquiry; investigation
start; commencement; beginning; initiation
optimization; optimisation