From WordNet (r) 3.0 (2006):
reverse
adj 1: directed or moving toward the rear; "a rearward glance";
"a rearward movement" [syn: rearward, reverse]
2: of the transmission gear causing backward movement in a motor
vehicle; "in reverse gear" [ant: forward]
3: reversed (turned backward) in order or nature or effect [syn:
inverse, reverse]
n 1: a relation of direct opposition; "we thought Sue was older
than Bill but just the reverse was true" [syn: reverse,
contrary, opposite]
2: the gears by which the motion of a machine can be reversed
[syn: reverse, reverse gear]
3: an unfortunate happening that hinders or impedes; something
that is thwarting or frustrating [syn: reverse, reversal,
setback, blow, black eye]
4: the side of a coin or medal that does not bear the principal
design [syn: reverse, verso] [ant: obverse]
5: (American football) a running play in which a back running in
one direction hands the ball to a back running in the
opposite direction
6: turning in the opposite direction [syn: reversion,
reverse, reversal, turnabout, turnaround]
v 1: change to the contrary; "The trend was reversed"; "the
tides turned against him"; "public opinion turned when it
was revealed that the president had an affair with a White
House intern" [syn: change by reversal, turn,
reverse]
2: turn inside out or upside down [syn: turn back, invert,
reverse]
3: rule against; "The Republicans were overruled when the House
voted on the bill" [syn: overrule, overturn, override,
overthrow, reverse]
4: cancel officially; "He revoked the ban on smoking"; "lift an
embargo"; "vacate a death sentence" [syn: revoke, annul,
lift, countermand, reverse, repeal, overturn,
rescind, vacate]
5: reverse the position, order, relation, or condition of; "when
forming a question, invert the subject and the verb" [syn:
invert, reverse]