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
Tsubaki	tsoo-bah-kee	Japanese
Salome	sə-LO-mee (English), SAH-lə-may (English)	English, German, Georgian, Biblical, Biblical Latin, Biblical Greek
Zia	-	Arabic
Joaquim	-	Portuguese, Catalan
Huggins	['hʌginz]
BjÖRk	PYUURK	Icelandic