A fool consumed shake (7)
I believe the answer is:
agitate
'shake' is the definition.
(synonyms)
'a fool consumed' is the wordplay.
'fool' becomes 'git' (I've seen this in other clues).
'consumed' becomes 'ate' (eating is a kind of consuming).
'a'+'git'+'ate'='AGITATE'
(Other definitions for agitate that I've seen before include "Disturb or churn" , "'Stir, excite (7)'" , "Disturb or shake" , "Keep moving" , "Foment" .)