blot your copybook
US /blɑt yər ˈkɑp.i.bʊk/
UK /blɑt yər ˈkɑp.i.bʊk/
1.
sicilini bozmak, itibarını zedelemek
to do something that spoils your good reputation or record
:
•
He was a promising student, but he blotted his copybook by cheating on the final exam.
Umut vadeden bir öğrenciydi ama final sınavında kopya çekerek sicilini bozdu.
•
One mistake could blot your copybook for years to come.
Tek bir hata, gelecek yıllar boyunca sicilini bozabilir.