An opening for me to secure theatre award? It’s just the opposite (7)
I believe the answer is:
antonym
'just the opposite' is the definition.
(a word's antonym is its opposite)
'an opening for me to secure theatre award?' is the wordplay.
'opening for' suggests taking the first letters.
'to secure' is an insertion indicator (inserted letters are secured inside).
'theatre award?' becomes 'Tony' (as in the Tony Awards).
The initial letter of 'me' is 'm'.
'an'+'m'='anm'
'anm' enclosing 'tony' is 'ANTONYM'.
'it's' is the link.
(Other definitions for antonym that I've seen before include "opposing description" , "Nick's could be free" , "opposing term" , "Word that means the opposite of another" , "A word opposite in meaning to another" .)