should; must; -able; probably; likely
although; despite; whereas; while; if only; I wish
safe; secure; certainly; surely; no thanks; I'm good
to be broken; to break; to fall through; to come to nothing
bad (taste); unpalatable; poor; unskillful; ugly; unattractive
how; in what way; how about
something; something or other; so-and-so; somehow; anyhow; one way or another
two persons; two people; pair; couple
to hide; to be hidden; to conceal oneself; to disappear
gap; space; break; interlude; chink (in one's armor, armour); chance
to see; to look; to examine; to look over; to look after; to attend to; to experience
to approach; to draw near; to get close; to get acquainted with; to get closer to; to get to know
engine; agency; organisation; system; facility
strategy; stratagem; trick; scheme; plot
obstruction; check; hindrance; prevention; impediment; interdiction
tactics; strategy; military operation; naval operation
action; conduct; behaviour; behavior; mobilization; mobilisation
medium; average; moderation; middle school; China; volume two (of three); during (a certain time when one did or is doing something)
level; standard; level (plane); floor; spirit level; (surveyor's) level
mission; delegation; transmission
to understand; to comprehend; to become clear; to be known; I know!; I think so too!
immediately; at once; instantly
to be separated; to be apart; to leave; to go away; to leave (a job, etc.); to quit
good; excellent; sufficient; enough; profitable (deal, business offer, etc.); beneficial
this way; this direction; here; this (one); I; me
to hurry; to rush; to hasten; to make something happen sooner
now; the present time; just now; another; more
same; identical; equal; anyway; anyhow; in either case
that's the way it is; yes; is that so?; is it?
safety; security; safely; without incident; good health; inaction
adds force or indicates command
there; over there; genitals; private parts; that far; that much
to turn back (e.g. half-way); to return; to go back; to recover (e.g. something lost); to be returned; to rebound
collision; crash; running into; conflict; quarrel; clashing
that; that thing; that person; then; that time; that place (over there); down there (i.e. one's genitals)
yes; yeah; huh?; what?; not; 's
calculation; reckoning; count; forecast
measurement error; calculation error