Conceited means far too proud of yourself. A conceited man, terribly conceited, conceited about it.
It is about visible self-satisfaction, which is what separates it from confident — confidence is about capability and conceit is about display. It is an old-fashioned insult and still perfectly clear. Note conceit, which as a literary term means an elaborate extended metaphor and is entirely neutral, so a metaphysical conceit is a technical thing and not an insult at all.
1adjectiveconceitedFar too proud of yourself.
“She found him conceited; he talked about his own achievements all evening.”
synonyms: vain, self-important
conceited is a quality of vanity.
Also accepted in games: vain, arrogant
Middle English
conceyte
English
conceit
English, today
conceited
From conceit + -ed. conceit comes from Middle English conceyte. From Middle English conceyte, formed from conceyven by analogy with pairs such as (Modern English) deceive~deceit, receive~receipt etc. a doublet of concept and concetto. Akin to Portuguese conceito.
Etymology from Wiktionary, CC BY-SA