busy; having no (free) time
belt (waist, seat, etc.); strap; belt; zone; drive belt; machine belt
to extract; to pull out; to draw out; to headhunt; to lure away; to poach
joint (knee, elbow, etc.)
to rise; to go up; to enter (esp. from outdoors); to come in; to enter (a school); to advance to the next grade; to get out (of water)
gotcha; alrighty; got it; OK
to be delighted; to be glad; to congratulate; to gratefully accept
not yet known; unknown; strange
conclusion; decision; judgement; affirmative
enclosing wall; boundary fence; obstacle; barrier
putting into operation; invocation
body; body blow (in boxing)
one by one; one after another; successively
to fire into (e.g. a crowd); to launch (e.g. missiles); to lob (e.g. grenades)
cowardly; craven; unfair; mean; sneaky
exchange; interchange; switching; reciprocity; barter; substitution
to become blunt; to grow dull; to become less capable; to weaken; to falter
battle; fight; war; struggle; conflict
words of praise; eulogy; compliment
study; learning; tutorial
opposition; rivalry; competition; antagonism
cheating; fraud; trickery; fake; bogus; quack
question; inquiry; enquiry
so far; up to now; hitherto; that's enough (for today); it ends here
countermeasure; counter-measure
something like ...; something called ...
understanding; comprehension; appreciation; sympathy
bright; intelligent; clever; smart
excitement; stimulation; agitation; arousal
may; might; perhaps; may be; possibly
artificial intelligence; AI
boss; leader; head; boss (difficult enemy, usu. at the end of a section or level)
to hang; to suspend; to lower; to reduce; to demote; to move back
another; one more; not quite; not very good; lacking
pipe; tube; gun barrel; gun; cannon; well lining
to distance oneself (from); to keep (something or someone) at a distance; to maintain a distance (from)
to defend against; to protect against; to prevent; to avert; to avoid
to get worse; to deteriorate; to go from bad to worse; to spoil (of food); to go bad; to perish