feedback (on a product, person's performance, etc.); feedback (in an electronic circuit, biological system, etc.)
to store; to save up; to accumulate (e.g. knowledge); to build up (e.g. experience); to grow (a beard, moustache, etc.); to wear
impediment; burden; encumbrance; hindrance; drag
solid; robust; tight; taut; shrewd; calculating
obstacle; hindrance; impediment; difficulty
everything; anything; nothing
easily; readily; with ease; without trouble
continuation; continuance; maintenance; persistence; going on
difficult to imagine; quite unlikely to; very doubtful; would not expect
to swell (from inflammation); to become swollen
to hinder; to obstruct; to disrupt; to interfere with; to cause a delay
observation; survey; measurement; opinion; prediction; thinking
to play a role; to serve a function; to play a part
to match (rhythm, speed, etc.); to join together; to unite; to face; to be opposite (someone); to compare; to check with
deterioration; getting worse; worsening; aggravation; degeneration; corruption
to continue; to keep going; to go along (e.g. with some trend)
violent explosion; bursting
to break; to be smashed; to split; to crack; to be divided (opinion, vote, etc.); to split (e.g. of a party); to come to light
passing through (of a tunnel, bullet, etc.); going (right) through; penetrating; (arch.) being well versed (in)
to burst into flames; to fire (of a gun); to fan a fire with one's breath; to breathe fire; to spit fire
flame; blaze; flames (of intense emotion, e.g. love, jealousy, anger); passion
to notify; to advise; to inform
close call; narrow escape; hair's breadth; narrowly; just in time; by a hair's breadth
the point of ...; the place where ...; a place called ...; places known as ...; I would say ...; ... is how I'd put it
equipment; harness; fittings; orthotic; orthosis; brace
unable to fight (esp. in video games); unconscious; knocked out; dead
at this juncture; after all this time; at this stage; now
Herculean task; next-to-impossible undertaking
frustrated (over a failure, humiliation or injustice); annoyed; chagrined; (bitterly) disappointed; bitter; vexed
very low frequency sound; heavy bass sound; low-register sound
fully prepared; all ready
to divide; to cut; to halve; to break; to crack; to dilute; to fall below
heavy fog; dense fog; thick fog
one step higher; one better; cut above; one up
recovery; regaining; getting back; retrieval; restoration; revival
before one knows; before one becomes aware of; unnoticed; unawares
(confronting a problem, etc.) head-on; directly; outright; (lit.) from the front
main force; main strength; main effort; primary focus
if possible; preferably; if circumstances allow
restoration; recovery; rehabilitation; recovery (from an illness); recuperation; convalescence
low-altitude flying; having consistently poor results (grades, sales, etc.); barely scraping by; being on the verge of failing