a know-all

(British & Australian) also a know-it-all (American & Australian)

someone who seems to know everything and annoys other people by showing how clever they are No one likes him because he's such a know-all.

Name	Pronounced	Usage
Swanahilda	-	Ancient Germanic
WŁAdek	VWAW-dek	Polish
Adalynn	AD-ə-lin	English (Modern)
Zopyros	-	Ancient Greek
Tinatin	-	Georgian, Literature
Archimedes	-	Ancient Greek