← BackshareGuessbighead/ˈbɪɡˌhɛd/nounA person who is conceited or thinks they are very important.She's not a bighead; she's just confident in her abilities.Ever since he got that award, he's become a real bighead.Don't be such a bighead — nobody likes a show-off.Synonymsshow-offbraggartegotistAntonymshumblemodest