certain; sure; definite; reliable; sound; solid
hard to say; inexpressible; hesitant to say; embarrassing; delicate
long operating life; long service life; long life
proposition; thesis; notion; problem; issue; challenge
deoxyribonucleic acid; DNA
operation (of machine); operating; running; working
expectation; anticipation; prediction; forecast; conjecture
introduction; bringing in; leading in; installation
to decide to; to pretend that; to make a practice of doing; to make it a rule to
so far; up to now; hitherto; that's enough (for today); it ends here
woman; female; feminine gender
base; basis; base (e.g. military); depot; base; base bag
man; male; masculine gender
use; adoption; acceptance; appointment; employment; engagement
near; neighbourhood; nearly (e.g. "it took nearly one year"); close to; shortly; soon
calculation; reckoning; count; forecast
approximate (number); rough (calculation); sloppy (person); lackadaisical
clearly; plainly; distinctly; to be clear; to be definite; to be certain
what would (you) do?; what to do about it
number; edition; sobriquet; pen-name; size (of printing types, canvases, knitting needles, etc.); suffix attached to names of ships, trains, airplanes, etc.
popular name; common name; nickname; alias
high grade; special grade; classy
exceedingly; extremely; decisively
information retrieval; IR; investor relations; integrated resort; infrared radiation; infrared
staff member; employee; worker; personnel
to multiply; to crossbreed; to cross-breed; to mix (e.g. paint colours)
to give birth; to bear (child); to lay (eggs); to produce; to yield; to give rise to
not a chance; not likely; oh no; yuck; fault; defect
to pick up; to find; to gather
no problem; all right; not an issue; unobjectionable
research establishment; research institute; laboratory
charge; custody; safekeeping; deposit; storage
focusing on only the good points or strong points; incorporating the benefits (while ignoring the drawbacks); picking the best of both (everything); cherry-picking (e.g. information)
satisfactory; decent; good; proper; worthy
such ... as; or some such
to fit; to get into; to be fit for (a job, etc.); to be suited for; to fall into; to plunge into
too much for one to handle; beyond one's capacity; unmanageable; uncontrollable; incorrigible; obstreperous
foot; paw; leg; gait; pace; bottom structural component (i.e. radical) of a kanji; means of transportation