英和和英

an irascible response

react to an impulse

prompt response

a response

positive response

make no response

a random answer

an elicited response

react favorably to

viewer response

an excessive reaction

a perfunctory reply

a curt answer

to give an answer

an abrupt reply

a crisp reply

You must answer promptly―give prompt answers―be prompt in giving answers.

answer the bell

to say yes or no

a lukewarm response

an airy reply

（意味の二様に取れる返事なら）to give an equivocal answer―（漠然とした返事なら）―give a vague answer―（言を左右に托した返事なら）―give an evasive answer―（煮え切れない返事なら）―give a dubious answer―（言質を避けるような返事なら）―make a non-committal reply.

an apt reply

an answering glance

trigger a reaction

a smart retort

a pert answer

grumble an answer

the state of something lacking of reaction

to give a cold answer