IPA: //ˈsmʌɡ.nəs//
KK: /smʌɡnɪs/
The quality of feeling very pleased with oneself, often in a way that shows a lack of concern for others.
His smugness was evident when he bragged about his promotion in front of his colleagues.
Smugness is formed from "smug" (originating from the dialectal English word meaning 'neat' or 'trim') and the suffix "-ness" (meaning the state or quality of). The word "smugness" refers to the state of being smug, or having excessive pride in oneself or one's achievements.
Think of the word 'smug' which describes someone who feels overly pleased with themselves, and remember that 'smugness' is the quality of being that way.