In opportunity to speak, very very shrewd (5)
I believe the answer is:
savvy
'shrewd' is the definition.
(I've seen this in another clue)
'in opportunity to speak very very' is the wordplay.
'in' means one lot of letters goes inside another.
'opportunity to speak' becomes 'say'' (as in 'having a say' over a decision).
'very' becomes 'v' (abbreviation).
'very' becomes 'v' (abbreviation).
'v'+'v'='vv'
'say' going around 'vv' is 'SAVVY'.
(Other definitions for savvy that I've seen before include "Knowing" , "smart" , "Shrewdness, understanding (slang)" , "Possessing the required knowledge" , "Shrewd, knowledgeable" .)