Smug is a word that people often use to describe people who are feeling too good about themselves. They are usually very confident and think that they are better than everyone else.
He was very smug when he won the race.
She was very smug when she won the argument.
adjective
marked by excessive complacency or self-satisfaction
Synonyms:
1
It is the smug look on the vendor's face.
2
Always wearing that crown, the king looked smug.
3
But the reply is clearly unhelpful and smug.
4
Thanks for the smug little comment.
5
Its smugness is a corollary of its vacuity.
6
His smug attitude bugged her.
7
I don't understand the smug attitude.
8
His immediate superior was the smug and buck toothed.
9
Nancy tells a smug Jake that she will go to the police.
10
He was ascetic in appearance and, at the same time, ostentatiously smug.