Odious type interminably dominating servant without exception (2,1,3)
I believe the answer is:
to a man
'without exception' is the definition.
(synonyms)
'odious type interminably dominating servant' is the wordplay.
I cannot quite understand how this works, but
'servant' could be 'man' (man is a kind of servant) and 'man' is found in the answer.
The remaining letters 'toa' is a valid word which might be clued in a way I don't see.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for to a man that I've seen before include "All united-males only?" , "All without exception - excluding women?" , "Unopposed" , "all of us" .)