Think about internet maybe holding answer (9)
I believe the answer is:
entertain
'think about' is the definition.
(synonyms)
'internet maybe holding answer' is the wordplay.
'maybe' indicates anagramming the letters.
'holding' is an insertion indicator.
'answer' becomes 'a' (abbreviation eg in Q and A).
'internet' with letters rearranged gives 'entertin'.
'entertin' placed around 'a' is 'ENTERTAIN'.
(Other definitions for entertain that I've seen before include "Train teen to amuse" , "Show hospitality to; amuse" , "Have a mind to - have a party" , "what the party host will do" , "Amuse; host" .)