[ sin-seer ]
See synonyms for: sinceresincerestsincerelysincereness on

adjective,sin·cer·er, sin·cer·est.
  1. free of deceit, hypocrisy, or falseness; earnest: a sincere apology.

  2. genuine; real: a sincere effort to improve; a sincere friend.

  1. pure; unmixed; unadulterated.

  2. Obsolete. sound; unimpaired.

Origin of sincere

First recorded in 1525–35; from Latin sincērus “pure, clean, untainted”

synonym study For sincere

1. See earnest1.

Other words for sincere

Opposites for sincere

Other words from sincere

  • sin·cere·ly, adverb
  • sin·cere·ness, noun
  • qua·si-sin·cere, adjective
  • qua·si-sin·cere·ly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2024

How to use sincere in a sentence

  • Not only was he handsomer and stronger and more straightforward, he showed a sincerer liking for her.

  • For my part, I own frankly, that I have never met with one who has inspired me with a sincerer admiration.

    Eugene Aram, Complete | Edward Bulwer-Lytton
  • To Lucilius he pays also the sincerer tribute of frequent imitation.

    The Roman Poets of the Republic | William Young Sellar
  • She has often told me she never knew a better, sincerer, nobler, or more sensible woman than Barty's wife.

    The Martian | George Du Maurier
  • He might have starved out the deeper love, the truth and tenderness of a sincerer nature, if it had been drawn towards him.

    Prisoners | Mary Cholmondeley

British Dictionary definitions for sincere


/ (sɪnˈsɪə) /

  1. not hypocritical or deceitful; open; genuine: a sincere person; sincere regret

  2. archaic pure; unadulterated; unmixed

  1. obsolete sound; whole

Origin of sincere

C16: from Latin sincērus

Derived forms of sincere

  • sincerely, adverb
  • sincerity (sɪnˈsɛrɪtɪ) or sincereness, 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