swelled head
US /swɛld hɛd/
UK /swɛld hɛd/
1.
うぬぼれ, 慢心
a person who has an exaggerated opinion of their own importance, ability, or attractiveness
:
•
After winning the award, he got a bit of a swelled head.
賞を受賞した後、彼は少しうぬぼれてしまった。
•
Don't let success give you a swelled head.
成功でうぬぼれるな。