逆

reverse discrimination

a dream which is contradicted by reality

Mathematics

reciprocal; inverse number; multiplicative inverse

upside-down crucifixion

chocolate given by a boy to a girl on Valentine's day (the other way around is the norm in Japan)

sending back; returning

Law

referring a case (regarding juvenile crime) back to the public prosecutor

Prefix

inverse; reverse; retro-; contra-

weather tide; adverse current

Computing

disassembly

no matter how hard one might try; no matter what one does; even if one stood on one's head

retrograde amnesia

counter-proposal

Medicine

reflux esophagitis

inverse proportion

Biology

(chromosomal) inversion

turning an object in the wrong direction

retort

word said backwards; word of opposite meaning

Mathematics

inverse mapping

antiphase; reverse phase

reverse transcriptase

inversion layer

reverse course; reversion

reaction; adverse effect

right-facing swastika; clockwise swastika