indispensable; essential; requisite; required; compulsory; necessary
taste (in goods, etc.); manners; etiquette; modesty; restraint; knowledge, experience (of the arts, etc.)
extreme logic; extreme argument; unreserved argument
attack; assault; criticism; censure; cyber attack (e.g. DDoS)
flame; blaze; flames (of intense emotion, e.g. love, jealousy, anger); passion
I would rather; I would as lief do; strong preference
this is why; that is the reason why; it is the case that; so; thus; with that
restoration; recovery; rehabilitation; recovery (from an illness); recuperation; convalescence
assistance; support; subsidy; supplement; spotting (in weight training)
system; lineage; corollary; system (range of strata that correspond to a particular time period); (taxonomical) series; -type
important; essential; significant; major; key; principal
to be connected (to); to be joined together; to connect (of a telephone call, the internet, etc.); to get through; to lead (to an outcome); to bring about (a result); to be lined up (e.g. of cars)
field; sphere; realm; division; branch
learning; acquisition (of a skill, knowledge, etc.)
to be sufficient; to be enough; to be worth doing; to be worthy of; to do (the job); to serve
lesson; class; teaching; instruction; classwork; schoolwork
to increase; to add to; to augment
somehow; somewhat; seemingly
seal; to seal (e.g. a letter); to affix a seal; to seal up
practice; training; drill; (an) exercise; workout
prohibition; inhibition; ban
with trouble; at great pains; rare; valuable; kind; generous
to become possible; to become able to (do)
small pieces; fragments; chopped meat; scraps (of beef, pork, etc.)
ability; capacity; capability; physical strength
difference; variation; difference
safe; secure; certainly; surely; no thanks; I'm good
to be too busy; to be occupied; to concentrate on single-mindedly
disqualification; elimination; incapacity; being unfit for one's role; being a failure
reform; reformation; reorganization
system of government; government structure
favourable; favorable; doing well; OK; all right
development; cultivation; application; exploitation (of resources)
policy; course; plan (of action); magnetic needle
development project (program, programme, plan)
as one would expect from ...; given that ... (naturally ...); because ...; for good reason; there is a (good) reason that ...
terrible; dreadful; terrifying; surprising; startling; tremendous
high-rise building; tower block; skyscraper
to be erected; to be built
multi-floor building; multi-storey building; bill; check; bill; promissory note