Sacked when unsuitable (3,2,5)
I believe the answer is:
out of place
'unsuitable' is the definition.
(thesaurus)
'sacked when' is the wordplay.
I cannot quite understand how this works, but
'sacked' could be 'out' and 'out' is present in the answer.
'when' could be 'e' (I've seen this in other clues) and 'e' is present in the answer.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for out of place that I've seen before include "needing to be elsewhere" , "incongruous" , "Not suited to the occasion" , "inappropriate" .)