- 反応【はんのう】 - reaction, response 
- 反対【はんたい】 - opposition, resistance, antagonism, hostility, objection, dissent, reverse, opposite, inverse, contrary 
- 違反【いはん】 - violation, offense, offence, breach, transgression, infringement, contravention 
- 反省【はんせい】 - reflection, reconsideration, introspection, meditation, contemplation, regret, repentance, remorse, being sorry 
- 反撃【はんげき】 - counterattack, counteroffensive, counterblow 
- 反乱【はんらん】 - insurrection, mutiny, rebellion, revolt, uprising 
- 反対側【はんたいがわ】 - opposite side, opposition 
- 反論【はんろん】 - objection, refutation, rebuttal, counterargument 
- 反する【はんする】 - to be contrary to, to be inconsistent with, to contradict, to act contrary to (rules or guidelines), to violate, to transgress, to oppose, to rebel, to revolt 
- 反則【はんそく】 - foul, breaking the rules, violation (of the law, regulations, etc.), infringement, breach, infraction 
- 反抗【はんこう】 - opposition, resistance, insubordination, defiance, hostility, rebellion 
- 反射【はんしゃ】 - reflection, reverberation, reflex, reflexes 
- 反発【はんぱつ】 - opposition, rebellion, revolt, resistance, backlash, refusal, rebounding, recoiling, repulsion, rally (e.g. in stock prices), recovery 
- 反乱軍【はんらんぐん】 - rebel army 
- 反響【はんきょう】 - echo, reverberation, response, reaction, repercussions, sensation, influence 
- 反戦【はんせん】 - anti-war 
- 反動【はんどう】 - reaction, recoil, kick, backlash 
- 反映【はんえい】 - reflection (of light), reflection (of society, attitudes, etc.), application (of an update, changes, etc.), taking effect 
- 反感【はんかん】 - antipathy, antagonism, animosity, revulsion, ill feeling 
- 反逆【はんぎゃく】 - treason, treachery, mutiny, rebellion, insurrection