(necessary) personnel; required person
value to society; raison d'être; existence value
correspondence (to); equivalence; suitability; coordination; dealing with; coping with
one-sided; unilateral; arbitrary
if it is (the case that ...)
to exchange (messages, greetings, arguments, etc.); to intersect; to cross; ... with one another; ... to each other
promise; vow; engagement; convention; rule; resolution
to tear; to rip; to break through (cordon, opponent's defense, etc.); to breach; to defeat; to beat; to break (e.g. silence)
crime; sin; penalty; sentence; fault; responsibility
to like; to be pleased with; to be delighted with; to take a liking to; to suit one's fancy
to wipe the slate clean; to start anew
to fit into (a box, frame, category, etc.); to be contained within; to settle down (into); to be installed (in one's rightful place); to settle into (one's position); to take up (a post)
whole area; surrounding area; all around; everywhere; all over the place
weird; eerie; ominous; creepy; uncanny; unearthly
to run out; to rush out; to start running; to begin to run; to break into a run
now advancing and now retreating; ebb and flow; seesawing; taking alternately favorable and unfavorable turns
advantageous; favourable; better; profitable; lucrative; gainful
sure to ...; certain to ...; bound to ...; it's natural that ...; it's obvious that ...
to fall (over, down); to collapse; to be destroyed (in a collapse); to collapse; to be confined to bed (with an illness); to come down with; to die
heart; guts; nerve; heart (of something); central part
to bite (at); to snap at; to snap at (someone); to flare up at; to jump down (someone's) throat
gem; jewel; precious stone
to hold in one's mouth; to bring with; to take along
usual; ordinary; normal; regular; general; common
return; reversion; comeback; carriage return
reset; fresh start; new beginning
to project; to reflect; to cast (shadow)
to sigh; to breathe a sigh
to give up on; to turn one's back on; to abandon; to forsake; to desert; to leave
harmful effect; harmful influence; evil practice; abuse; malady
look!; see!; here!; there!; hey!
to gain an advantage; to enjoy an advantage; to turn the tables (on)
fantasy; illusion; vision; dream
starting point; origin; origin (of coordinate axes); datum point
return (to); revolution; recurrence; regression
occurring in succession; doing in succession; firing in rapid succession; volley of shots; volley (of questions, abuse, etc.); stream
ferocious; brutal; atrocious; savage; barbarous
to change (into); to turn (into); to transform (into); to influence
common; commonplace; pulp paper; granulated sugar
important; significant; precious; valuable; careful
complex; complicated; intricate; mixed (feelings)
state of mind; mental state; mental attitude