know-all

UK
/ˈnəʊ.ɔːl/
US
/ˈnoʊ.ɔl/

Translations

know-allnoun
know-alls
pl
UK
/ˈnəʊ.ɔːl/
US
/ˈnoʊ.ɔl/
He is such a know-all, always acting like he knows everything.
Он такой всезнайка, всегда ведет себя так, будто знает всё.
Additional translations
Synonyms
smart aleck
wise guy
know-alladjective
UK
/ˈnəʊ ɔːl/
US
/ˈnoʊ ɔl/
Used mainly attributively; typically non-gradable.

Definitions

know-allnoun
A person who behaves as if they know everything.
Despite his lack of experience, he acted like a know-all during the meeting.
know-alladjective
Displaying or characterized by an attitude of knowing everything; conceitedly opinionated.
Her know-all tone irritated everyone in the room.