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insincere

[in-sin-seer] /ˌɪn sɪnˈsɪər/
adjective
1.
not sincere; not honest in the expression of actual feeling; hypocritical.
Origin of insincere
1625-1635
1625-35; < Latin insincērus tainted, dishonest; see in-3, sincere
Related forms
insincerely, adverb
Synonyms
deceitful, disingenuous, guileful, two-faced.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2016.
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Examples from the Web for insincere
Contemporary Examples
Historical Examples
  • It must not be thought that Gertie was insincere: she was not; she was dramatic.

    None Other Gods Robert Hugh Benson
  • Eugene Grandon has an insincere nature, while hers is like crystal.

    Floyd Grandon's Honor Amanda Minnie Douglas
  • In fact, prayer is worse than useless if not sincere, and it is insincere if not carried out in the life of the "pray-er."

    Letters to the Clergy John Ruskin
  • Nor is it certain that in this act Richard was wholly hypocritical and insincere.

    Richard I Jacob Abbott
  • Clayton had unusual ability and experience, but was crafty and insincere.

British Dictionary definitions for insincere

insincere

/ˌɪnsɪnˈsɪə/
adjective
1.
lacking sincerity; hypocritical
Derived Forms
insincerely, adverb
insincerity (ˌɪnsɪnˈsɛrɪtɪ) noun
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition
© William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012
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Word Origin and History for insincere
adj.

1620s (implied in insincerely), from Latin insincerus "not genuine, not pure, adulterated," from in- "not" (see in- (1)) + sincerus (see sincere).

Online Etymology Dictionary, © 2010 Douglas Harper
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