... wrongly press one for answer (8)
I believe the answer is:
response
'for answer' is the definition.
(synonyms)
'wrongly press one' is the wordplay.
'wrongly' indicates anagramming the letters (I've seen this in other clues).
'press'+'one'='pressone'
'pressone' anagrammed gives 'RESPONSE'.
(Other definitions for response that I've seen before include "Press one for a reply" , "See porn (anag) -- answer" , "Answer - reaction" , "counter" , "bid by partner" .)