to exchange (messages, greetings, arguments, etc.); to intersect; to cross; ... with one another; ... to each other
not checking; undergoing no checks; leaving unchecked
hazardous materials; dangerous goods; explosives; combustibles
error; fumble that leads to failing to put out a runner
daily update; updating daily
innocence; being not guilty
not necessarily so; is not always true; there is no guarantee that ...; there is no telling
address; address; email address; addressing (the ball)
contacting; getting in touch; communication; call; message
urgent; pressing; immediate; urgently; promptly; at once
offender; criminal; culprit
infection; contagion; becoming infected; being infected (e.g. with harmful ideas); being influenced (by)
existence or nonexistence; presence or absence; consent or refusal; yes or no
remote control; remote operation
personal history; background; log; record; hysteresis
to follow (a road, path, etc.); to trace; to follow (a clue, scent, tracks, plot, etc.); to trace (a route, history, family tree, etc.); to head towards (of a situation); to go in the direction of
final; eventual; ultimate
to take down; to bring down; to drop off (a passenger); to let off; to withdraw (money); to use for the first time; to wear for the first time
voice; speech; phone (as opposed to a phoneme); speech sound; audio; sound (as opposed to the picture)
input; (data) entry; typing
to peek (through a keyhole, gap, etc.); to look down into (a ravine, etc.); to peek into (a shop, bookstore, etc.); to sneak a look at; to take a quick look at; to peep (through a telescope, microscope, etc.); to stick out (a scarf from a collar, etc.)
going side-by-side; going abreast; running concurrently; occurring at the same time; keeping pace with
not ... for nothing; not ... with nothing to show for it; worthwhile; no wonder ...
arrival (of post, news, correspondence, etc.); receiving (a phone call, email, etc.)
again and again; repeatedly
slight movement; slight tremor; quiver
robot; (mere) puppet; pawn; figurehead
crime; criminal act; offence; offense
fast (walking); quick; brisk; quick (passing of time); rapid; swift
drawing room; parlour; parlor; reception office
separate room; another room; special room; (arch.) concubine (of a noble)
top; top position; senior management; senior bureaucrat; home page (of a website)
search (esp. in criminal investigations); investigation; inquiry; enquiry
having served one's purpose; being finished (with); business settled
to stand watch; to stand guard; to look out; to open (one's eyes) wide
political judgement; political decision
to carry on one's back; to bear; to take (responsibility); to assume; to suffer (an injury); to sustain (a wound)
to tremble; to shiver; to shake