noun, plural sin·cer·i·ties.

freedom from deceit, hypocrisy, or duplicity; probity in intention or in communicating; earnestness.

Origin of sincerity

From the Latin word sincēritās, dating back to 1540–50. See sincere, -ity
Related formssu·per·sin·cer·i·ty, noun

Synonyms for sincerity

Synonym study

See honor.

Antonyms for sincerity Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for sincerity

Contemporary Examples of sincerity

Historical Examples of sincerity

  • It continued musically low, but there was in it the insistent note of sincerity.

    Within the Law

    Marvin Dana

  • Presently, however, the sincerity and persistence of the girl won him over.

    Within the Law

    Marvin Dana

  • The sincerity of him was excuse enough for the seeming indelicacy of the question.

    Within the Law

    Marvin Dana

  • The quality of sincerity in Dick's voice was more convincing than any vow might have been.

    Within the Law

    Marvin Dana

  • For the first time, he found himself believing in her sincerity.


    Mary Roberts Rinehart

Word Origin and History for sincerity

early 15c., "honesty, genuineness," from Middle French sinceritie (early 16c., Modern French sincérité) and directly from Latin sinceritatem (nominative sinceritas) "purity, soundness, wholeness," from sincerus "whole, clean, uninjured," figuratively "sound, genuine, pure, true, candid, truthful" (see sincere).

Online Etymology Dictionary, © 2010 Douglas Harper