/ rɪˈspɒnsɪv; NAmE -ˈspɑːn-/ adjective responsive (to sb/sth)
1.
[ not usually before noun ] reacting quickly and in a positive way :
Firms have to be responsive to consumer demand.
a flu virus that is not responsive to treatment
2.
reacting with interest or enthusiasm
SYN receptive :
The club is responsive to new ideas.
a responsive and enthusiastic audience
OPP unresponsive
► re·spon·sive·ly adverb
► re·spon·sive·ness noun [ U ]:
a lack of responsiveness to client needs
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WORD ORIGIN
late Middle English : from French responsif , -ive or late Latin responsivus , from respons- answered, from the verb respondere , from re- again + spondere to pledge.