Criticise one guilty of overacting? (6)
I believe the answer is:
hammer
'guilty of overacting?' is the definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'criticise one' is the wordplay.
I cannot really understand how this works, but
'one' could be 'me' (a setter might use 'one' to humourously mean 'me') and 'me' is located in the answer.
This explanation may well be incorrect...
Can you help me to learn more?
(Other definitions for hammer that I've seen before include "Horrific house" , "Small ear bone" , "Nailing tool" , "Tool; part of a gun" , "Go at it . . . . . . and tongs, with great energy and noise" .)