Make speech in agora, tentatively (5)
I believe the answer is:
orate
'make speech' is the definition.
(oratory is public speaking)
'in agora tentatively' is the wordplay.
'in' says the answer is hidden in the clue.
'ORATE' is hidden in the letters of 'agora tentatively'.
(Other definitions for orate that I've seen before include "Speak pompously and at length" , "Give speech" , "Make a flowery speech" , "Speaker may" , "Speechify" .)