number (in a series); (one's) turn; watch; guard; rank; standing; bout
OK; okay; fine (without); not needed; unnecessary
gate (for entry, boarding, etc.); gate; logic element
to open (e.g. doors); to open (e.g. business, etc.); to be empty; to be vacant; to be available; to be open (e.g. neckline, etc.); to have been opened (of one's eyes, mouth, etc.)
control (by the state); controlling; coordination; air traffic control
room; wife (of someone of high rank); scabbard; Chinese "Encampment" constellation (one of the 28 mansions)
correspondence; communication; transmission; news; signal; telecommunications
to connect; to link together; to tie; to fasten; to maintain; to preserve; to transfer (phone call)
lock; lock (in rugby); lock forward
to be disconnected; to get out of place; to miss the mark; to get it wrong (e.g. guess, expectation); to be removed; to be excluded
the rest; the others; in addition (to that); besides that; and so forth; and the like
to spread (out); to extend; to stretch; to reach to; to get around; to fill (e.g. a space)
blue; azure; green; pale (facial color); gray; unripe
innumerable; countless; numberless
weightlessness; zero gravity
full length; total length; overall length
gradually; steadily; slowly; little by little; step by step; by degrees
to represent; to signify; to reveal; to show; to express; to make widely known
cooperation; collaboration; help; support
thanks; gratitude; appreciation; thankfulness
comprehension; consent; understanding; OK; roger
good; excellent; sufficient; enough; profitable (deal, business offer, etc.); beneficial
(sea) voyage; navigation; sailing; passage; cruise
to run; to run (of a vehicle); to drive; to rush (to); to dash; to retreat; to flee
to resound; to be heard far away; to reverberate; to shake; to come (home); to remain (with someone)
operation (of a machine); running; working (and earning money); workload; deployment (e.g. to a production environment); release
faint; dim; weak; poor; wretched; meagre
oscillation; vibration; swing (e.g. of a pendulum)
to convey; to report; to transmit; to communicate; to tell; to impart
departure (from a base); takeoff; launch; starting (to move; of a car); start; moving off
generally; in the main; (more or less) everything; all parts; ordinary; usual
phase transition; phase change; phase transformation
still; as yet; (not) yet; more; (more) still; at least
to ask; to enquire; to inquire; to search; to look for; to look into
in short; in a nutshell; in a word; to cut a long story short
as is; as it is; as things are; like this; this way; at this rate
standard; criterion; norm; average; the norm; the ordinary
approximately; about; promise; appointment; shortening; reduction