反

arching one's body backwards (like a shrimp)

Kabuki

holding out one or both hands and arching one's body backwards like a shrimp (to represent being overwhelmed by someone's power)

parking violation

violation of the constitution

positive reaction

luminol reaction (e.g. to a bloodstain)

win or lose; sink or swim; make or break; all or nothing

Common noun; Nouns which may take the genitive case particle 'no'

self-questioning

Noun or participle which takes the aux. verb suru

to self-question; to rethink; to reflect on oneself

chemical reaction used to detect residue from gunshots

Colloquial

gunpowder residue; gun shot residue; GSR

electoral irregularities

recoilless rifle; recoilless gun

lack of reflection (on one's conduct, failures, etc.); lack of self-examination; lack of introspection

nuclear fusion reaction

vital reaction

traffic infringement; traffic law violation

rebellious spirit

Chemistry

flame reaction; flame test; flame coloration test

immunoreaction

speeding

ticket (e.g. for a traffic violation)

abuse of confidentiality

tossing and turning in bed; turning over in bed worrying over something

nuclear reaction

conflict of interest

nuclear reactor