Brushed with haste (4)
I believe the answer is:
rush
'haste' is the definition.
(synonyms)
'brushed with' is the wordplay.
'with' indicates a hidden word.
'RUSH' can be found hidden inside 'brushed'.
(Other definitions for rush that I've seen before include "High" , "Overcharge" , "Hasten; plant" , "Water plant; hurry" , "Hurry, surge" .)