Made a mistake (5)
'made a mistake' is the definition.
('err' can be a synonym of 'make a mistake')
This is all the clue.
(Other definitions for erred that I've seen before include "Made mistakes" , "Made a mistake, was wrong" , "was inaccurate" , "Was mistaken" , "slipped up" .)
'made a mistake' is the definition.
('slip' can be a synonym of 'make a mistake')
This is all the clue.
(Other definitions for slipped that I've seen before include "Slid" , "made a mistake" , "Made an error" .)