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.

• have had your fill of
• have had your fill of something
• have half a mind
• have half a mind to
• have half a mind to do something
• have half an ear on
• have half an ear on something
• have half an eye on
• have half an eye on someone
• have half an eye on something
• have hand in the till
• have hands full
• have hanging over head
• have hanging over your head
• have head in the clouds
• have head screwed on
• have head screwed on right
• have head screwed on the right way
• have head stuck up arse
• have head stuck up your arse
• have head up arse
• have head up your arse
• have heard the last of
• have heard the last of someone
• have heard the last of something