1. A phrase, idiom, or manner of speaking that is no longer commonly used or fashionable; archaic or obsolete language
Using 'thee' and 'thou' is an outdated expression in modern English.
Usar 'thee' e 'thou' é uma expressão desatualizada no inglês moderno.
2. Language that reflects an older time period and sounds old-fashioned or quaint to contemporary speakers
Calling someone 'the bee's knees' is an outdated expression from the 1920s.
'The bee's knees' é uma expressão desatualizada dos anos 1920.