engine; agency; organisation; system; facility
emergency stop; emergency shutdown; scram (nuclear reactor)
(just) making sure; just to be sure; just in case; for caution's sake
striking (at something) and missing; swing and a miss; vain attempt
what's the matter?; what's wrong?; what happened (to) ...?; what have you done (with) ...?; where is ...?
machine; mechanism; instrument; appliance; apparatus
bad condition; not to work out (i.e. a deal); disagreement; break-off; disorder; slump
why; oh; no!; quit it!; stop!
time; hour; occasion; case; chance; opportunity
response (felt in the hands); resistance; reaction; response; effect
abruptly; suddenly; all of a sudden; without warning
to differ (from); to vary; to not be in the usual condition; to not match the correct (answer, etc.); to be different from promised; isn't it?
fellow; guy; thing; object; he; she
source of electricity; electrical power; power (button on TV, etc.)
to drop; to lose; to clean off (dirt, makeup, paint, etc.); to remove (e.g. stains or facial hair); to lose (a match); to reject (an applicant); to lower (e.g. shoulders or voice)
somehow; how; in what way; why; what kind of
cancelling (a debt); forgiving (a debt); being even; forgetting (what was said or done); pretending (something never happened)
energy; energy; strength; energy source; energy resource; food energy
getting closer; drawing nearer; being not much different; being near (age, skill, etc.); becoming close (i.e. friendly); becoming intimate
yikes!; eek!; ook; eek; customer
gun; cannon; artillery; ordnance
to fall down; to drop; to be omitted; to be missing; to decrease; to sink; to fail (e.g. exam or class)
main; principal; main dish; main course; main part; principal part
to move; to stir; to operate; to run; to make a move; to take action; to be touched
after all; because; but; even; too; as well
to stop; to turn off; to park; to prevent; to suppress (a cough); to stop (someone from doing something); to dissuade
endorsing and questioning the preceding statement; lamenting reflections on the preceding statement
again; once more; also; too; on the other hand; while; and
sight (e.g. of a gun); aim; alignment
to attach; to join; to furnish (a house with); to wear; to put on; to keep a diary; to make an entry
the front; honesty; uprightness; decency; normality
doing; in such a state; doing together; doing to each other; familiarizing suffix (sometimes meaning "small")
firing; shooting; fire; gunshot; marksmanship
something like ...; things like ...; someone like ...; the likes of ...