blot one's copy book
/blɒt wʌnz ˈkɒpi bʊk/
To make a serious mistake or error.
“One should never blot one's copy book at work.”
Aggiungi a My Deck
/blɒt wʌnz ˈkɒpi bʊk/
To make a serious mistake or error.
“One should never blot one's copy book at work.”
Aggiungi a My Deck