Provoked, pretended to reserve time (10)
I believe the answer is:
stimulated
'provoked' is the definition.
(stimulating is a kind of provoking)
'pretended to reserve time' is the wordplay.
I cannot quite understand how this works, but
'time' could be 't' (abbreviation) and 't' is present in the answer.
'pretended' could be 'simulated' ('simulate' can be a synonym of 'pretend') and 'simulated' is present in the remaining letters.
No letters remain.
This may be the basis of the clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for stimulated that I've seen before include "Created excitement" , "Energised" , "Provoked the senses" , "Aroused" .)