1701, from ostentation + -ous. Earlier in a similar sense were ostentative (c. 1600); ostentive (1590s). Related: Ostentatiously; ostentatiousness (1650s).
权威例句
1. She's got a lovely way with language without ever sounding ostentatious.
她的语言优美,丝毫无装腔作势之感。
2. He gave an ostentatious yawn.
他张扬地打了个哈欠。
3. They were neither aggressive nor ostentatious.
他们不好斗,也不爱炫耀自己.
4. It was thought ostentatious of him.
(大家)认为他那么做是为了炫耀阔绰.
5. Obviously he had plenty of money and was generous in its use without being ostentatious.