blot copybook

blot your copybook

(British & Australian)

to do something which spoils someone's opinion of you She blotted her copybook by arriving late to a meeting.

Name	Pronounced	Usage
Kerr	-	Scottish, English (Rare)
DuŠAna	-	Czech, Serbian, Croatian, Slovak
Gretta	GRET-ə	English
Liddy	LID-ee	English
Greg	[greg]
Chrysanthi	-	Greek