反応【はんのう】
reaction, response
応援【おうえん】
aid, assistance, help, support, reinforcement, cheering, rooting (for), support
一応【いちおう】
more or less, though not quite satisfactorily, after a fashion, pretty much, roughly, so far as it goes, tentatively, for the time being, just in case, once
対応【たいおう】
correspondence (to), equivalence, suitability, coordination, matching, being appropriate (for), dealing with, coping with, handling, response, reception, reaction, compatibility (with technology, software, etc.), capability, support (for)
応答【おうとう】
reply, answer, response
応じる【おうじる】
to respond, to satisfy, to accept, to comply with, to apply for
応える【こたえる】
to respond, to answer, to meet (e.g. demands, expectations), to affect, to take a toll, to strike home, to have an effect on, to be hard on someone (e.g. heat, cold, work, illness, etc.), to be a strain
応募【おうぼ】
application, subscription, entry (competition, raffle, etc.), enlistment
適応【てきおう】
adaptation, accommodation, conformity
応用【おうよう】
(practical) application, putting to practical use, applied (e.g. physics, linguistics, research)
応対【おうたい】
dealing with (people, customers, complaints, etc.), receiving (callers, visitors, etc.), attending to, handling, serving
応接【おうせつ】
reception (e.g. of visitors), dealing with
相応【そうおう】
suitable, appropriate, befitting, becoming, adequate, reasonable, proper, conjoining, association, samprayukta
応ずる【おうずる】
to answer, to respond, to meet, to satisfy, to accept
不相応【ふそうおう】
unsuited, inappropriate, improper, undeserved
順応【じゅんのう】
adaptation, accommodation, conforming, adjustment, acclimatization, acclimatisation
呼応【こおう】
hailing each other, acting in concert, responding (to), sympathizing (with), agreement, concord
応急【おうきゅう】
emergency, first-aid
応酬【おうしゅう】
exchange (of words, views, punches, cups, etc.), give-and-take, reply, answer, response, reciprocation, retort, riposte, tit for tat
拒絶反応【きょぜつはんのう】
(organ) rejection, unthinking dismissal, strong reaction (against)