insincere
insincereadjective- not expressing genuine feelings
不真诚的,不诚恳的;虚伪的
she flashed him an insincere smile.
她对他虚情假意地微微一笑。
派生insincerelyadverbinsincerity( pl. -ies) noun(pl. -ies)语源- mid 17th cent.: from Latin insincerus, from in- 'not' + sincerus 'sincere'
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