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sincere

[sin-seer] /sɪnˈsɪər/
adjective, sincerer, sincerest.
1.
free of deceit, hypocrisy, or falseness; earnest:
a sincere apology.
2.
genuine; real:
a sincere effort to improve; a sincere friend.
3.
pure; unmixed; unadulterated.
4.
Obsolete. sound; unimpaired.
Origin
1525-1535
1525-35; < Latin sincērus pure, clean, untainted
Related forms
sincerely, adverb
sincereness, noun
quasi-sincere, adjective
quasi-sincerely, adverb
Synonyms
1. frank, candid, honest, open, guileless; unaffected. See earnest1 .
Antonyms
1, 2. false.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2014.
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Examples for sincerest
  • Of course, he has never credited his predecessor for those ideas, but imitation is the sincerest form of flattery.
  • It's not looking down, it is the sincerest form of flattery-namely imitation.
  • My sincerest congratulations to each of this year's winners.
  • Our sincerest thanks to the scientists who contributed ideas for this summary.
  • The editors extend sincerest thanks and appreciation to all.
  • Donations are retained, with our sincerest appreciation, and you are invited to visit our website again to reschedule your tour.
  • We owe them our full support, and our sincerest thanks.
  • Please accept my sincerest thanks for doing an often thankless job.
British Dictionary definitions for sincerest

sincere

/sɪnˈsɪə/
adjective
1.
not hypocritical or deceitful; open; genuine a sincere person, sincere regret
2.
(archaic) pure; unadulterated; unmixed
3.
(obsolete) sound; whole
Derived Forms
sincerely, adverb
sincerity (sɪnˈsɛrɪtɪ), sincereness, noun
Word Origin
C16: from Latin sincērus
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 sincerest
sincere
1530s, from M.Fr. sincere, from L. sincerus (see sincerity).
Online Etymology Dictionary, © 2010 Douglas Harper
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11
13
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