vacuous
/ˈvækjʊəs/adjective
1- having or showing a lack of thought or intelligence; mindless没有思想的, 无知的:
a vacuous smile
傻笑
vacuous slogans.
空洞的口号。
1.1
- archaic empty〈古〉空的。
派生词
vacuity
/vəˈkjuːɪtɪ/ nounvacuously
adverbvacuousness
noun词源
mid 17th cent. (in the sense 'empty of matter'): from Latin vacuus 'empty' + -OUS.