to cease; to stop; to be over
to lend an ear; to hearken; to give an ear to; to listen carefully
goal; target; aim; mark; sign; landmark
whether or not (in phrases like "I don't know whether or not I can come")
vague; obscure; indistinct; hazy; ambiguous
certain; sure; definite; reliable; sound; solid
any more; any further; any better; any longer
to be found; to be discovered
obstinate; inflexible; thickheaded
space alien; alien; extraterrestrial being
stupid; foolish; idiotic; fool; idiot; blockhead
to lose; to miss (a change, opportunity); to lose (a loved one); to be bereaved of; to concede (goals, points, etc.)
may; might; perhaps; may be; possibly
if it's going to be that way, then ...; if given the choice; if possible; if anything
another person; other people; unrelated person (i.e. not related by blood); outsider; stranger
to borrow; to have a loan; to rent; to hire
to face; to go towards; to head towards
single word; a few words; brief comment
next (e.g. "next April"); forthcoming; coming; to come; to arrive; to be due to
to be in time (for); to serve (suit, meet) the purpose; to be good enough; to be enough
to keep; to preserve; to hold; to last; to endure; to keep well (food)
relation; relationship; participation; involvement; influence; effect
disagreeable; detestable; unpleasant; reluctant
past; after; too (much); over- (e.g. eating)
evacuation; emission (e.g. of CO2, etc.); ejection
restriction; restraint; limitation; limit
environmental problem; environmental issue
settlement; solution; resolution
among (other things); especially; particularly; inter alia; above all (else)
key to a solution; first step toward a solution; thread to unravel a mystery
10,000,000,000; ten billion
land made arable by the slash-and-burn method; swidden; slash-and-burn farming
piece(s) of firewood (esp. chopped or split from logs); kindling (twigs, branches, etc.); firewood
annihilation; total destruction; complete destruction; crushing defeat
step; stride; counter for steps
shock (psychological); crisis (esp. financial); event that rattles the markets; shock (physical, mechanical); shock (e.g. due to lack of blood flow); trauma
betterment; improvement; kaizen (Japanese business philosophy of continuous improvement)
tropical forest; tropical rainforest
chlorofluorocarbon gas; CFC gas