Dominate circle with part of speech, getting attention (8)
I believe the answer is:
overbear
'dominate' is the definition.
(overbearing is a kind of dominating)
'circle with part of speech getting attention' is the wordplay.
'circle' becomes 'o' (**).
'with' says to put letters next to each other.
'part of speech' becomes 'verb' (verb is a kind of part of speech).
'getting' is a charade indicator (letters next to each other).
'attention' becomes 'ear' (ear is a kind of attention).
'o'+'verb'+'ear'='OVERBEAR'
(Other definitions for overbear that I've seen before include "Bully" , "Produce excessively" , "Dominate" , "Be oppressive" , "Act in a particular way" .)