ˌsubstitute ˈteacher BrE AmE ( also substitute , sub informal ) noun [countable]
American English a teacher who teaches a class when the usual teacher is ill SYN supply teacher British English
ˌsubstitute ˈteacher BrE AmE ( also substitute , sub informal ) noun [countable]
American English a teacher who teaches a class when the usual teacher is ill SYN supply teacher British English
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012