how; in what way; how (much); to what extent; however (much); no matter how
origin; source; base; basis; cause; ingredient; material
operation (of machine); operating; running; working
standard; basis; criterion; norm; reference; datum
lending (money); finance; loan; adaptability; versatility; flexibility
to be effective; to take effect; to work; to function well; to be possible (to do, use, etc.); to be able to
difference; disparity; gap
conversely; on the contrary
complex; complicated; intricate; mixed (feelings)
regulation; adjustment; control
precise; exact; detailed; accurate; minute; close
reason; logic; method; system; order
formation; establishment; conclusion (e.g. of a deal); reaching (e.g. an agreement); being valid (of a theory, argument, etc.); holding
show (of power, ability, etc.); exhibition; demonstration; display; manifestation
by nature; naturally; by birth; innately; congenitally
to get the hang of; to learn the secret to
diligent study; devoting oneself to one's studies
education; schooling; training; culture; cultivation; education
equal; identical; the same; no different (to); just like; equivalent
had better ...; had better not ...
effect; efficacy; validity; potency
to cover; to hide; to conceal; to wrap; to disguise
a great deal; very much; a lot; (arch.) with a great amount of effort
matter being discussed (e.g. in a private conversation); it's not your business; it doesn't matter (to you); our side of the story (in contrast to another's version)
to handle (men); to master (a tool); to manage; to acquire a command of (a language)
sensible; sensuous; intuitive
pupil; disciple; adherent; follower; apprentice; young person
difficult to ...; hard to ...
to be to the point; to hit the mark; to be relevant
recommendation; referral; endorsement
to be satisfied (with an explanation, apology, etc.); to be happy
to lament; to grieve; to regret; to deplore
point in common; common feature
to be scattered about; to disperse; to be littered (with)
the teens (10-19); teenage; the tenth generation
enrolling at a cram school
on good terms with; on cordial terms with; getting along well with; to make friends with; to be good friends with; to get along with
observation; survey; watching