At no time content to postpone verdict (5)
I believe the answer is:
'at no time' is the definition.
'content to postpone verdict' is the wordplay.
'content to' indicates a hidden word.
'NEVER' is hidden in the letters of 'postpone verdict'.
(Other definitions for never that I've seen before include "On no account", "No way", "Strong negative", "Certainly not!", "I refuse".)