Definition of insincere in English:
Not expressing genuine feelings: she flashed him an insincere smile
More example sentences
- It's not an insincere smile, just rather mysterious: you see it neither arriving nor departing.
- She describes this binding of her brother's death with a call to arms as insincere, hypocritical and exploitative.
- Hallie gave him a quick, insincere smile that looked more like a grimace.
false, fake, hollow, artificial, feigned, pretended, put-on, exaggerated, overdone, lacking sincerity, not candid, not frank;
disingenuous, dissembling, dissimulating, devious, hypocritical, cynical, deceitful, deceptive, duplicitous, dishonest, underhand, double-dealing, faithless, disloyal, treacherous, two-faced, Janus-faced, lying, untruthful, mendacious, evasive, shifty, slippery
Mid 17th century: from Latin insincerus, from in- 'not' + sincerus 'sincere'.
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