Definition
To have an excessively high opinion of oneself, often regarding one's attractiveness or importance.
自命不凡；自以為是
The young actor always fancies himself, thinking he's a big star.
這位年輕演員總是很自命不凡，認為自己是大明星。
She always dresses impeccably because she fancies herself as very attractive.
她總是穿得很得體，因為她自認為非常有魅力。
He often talks at length in meetings, clearly fancying himself as an expert.
他經常在會議上長篇大論，顯然自認為是專家。