to challenge to (a fight, game, etc.); to throw down the gauntlet; to tackle (e.g. a problem); to attempt; to pressure (someone) for sex; to make advances to
to cease; to desist; to cut it out; to lay off (an activity); to drop (a subject) to abolish; to resign
to keep; to preserve; to hold; to last; to endure; to keep well (food)
though; notwithstanding; although
to swing; to sway; to shake; to waver; to feel shaken; to become unstable
space (between); gap; period of time (during, while); duration; between (two parties or things); among (a group); relations (between)
analysis; analytical study; parsing; parse
to talk about; to speak of; to recite; to chant; to indicate; to show
dimension; perspective; point of reference; level (of something)
confirmation; verification; validation; review; check; affirmation
start; commencement; beginning; initiation
conclusion; resolution; gathering and bundling; convergence; focusing (e.g. light); convergence
standby; preparation; arrangement
development; evolution; expansion; spreading out; expansion (of an algebraic expression); development (of a three-dimensional shape)
structure; construction; arrangement; plan; plot; contrivance
function; facility; faculty; feature
restoration; repair; mending
definitely; absolutely; absolute; unconditional; absoluteness
action; conduct; behaviour; behavior; mobilization; mobilisation
data collection; data acquisition
to see through; to see into (someone's heart, mind, etc.); to perceive; to find out; to detect
hey; hello; wow; oh; oomph; heave-ho
second (unit of time); arc second
(artillery) barrage; bullet hell; curtain fire; barrage of scrolling comments (overlaid on an online video)
to take one's place; to take one's position; to go into position; to line up
movement; transfer; migration; mobile; moving; traveling
safety; security; safely; without incident; good health; inaction
to perform; to do; to conduct oneself; to carry out
operation; functioning; running
equipment; facilities; installation; accommodations; conveniences; arrangements
change; conversion; transformation; transformation
generation (e.g. power); sending a telegram; telegraphing
instability; insecurity; crankiness
to go upstream; to go back (in time, to origin); to date back to; to trace back to
reverse; opposite; converse (of a hypothesis, etc.); inverse (function)
irradiation; radiation; beaming; exposure (to light); illumination
creation; generation; formation; derivation