1. 自命不凡的；自负的；矫饰的；炫耀的
If you say that someone or something is pretentious, you mean that they try to seem important or significant, but you do not think that they are.

1. intended to attract notice and impress others

e.g. an ostentatious sable coat

Synonym: ostentatious

2. making claim to or creating an appearance of (often undeserved) importance or distinction

e.g. a pretentious country house
a pretentious fraud
a pretentious scholarly edition

3. (of a display) tawdry or vulgar

Synonym: ostentatious