WordReference Random House Learner's Dictionary of American English © 2026
sin•cere /sɪnˈsɪr/USA pronunciation
adj., -cer•er, -cer•est.
sin•cer•i•ty /sɪnˈsɛrɪti/USA pronunciation n. [uncountable]dealing with his students with sincerity.
WordReference Random House Unabridged Dictionary of American English © 2026- not false or pretended:a sincere apology.
- genuine; real:a sincere effort to improve.
sin•cer•i•ty /sɪnˈsɛrɪti/USA pronunciation n. [uncountable]dealing with his students with sincerity.
sin•cere
(sin sēr′),USA pronunciation adj., -cer•er, -cer•est.
sin•cere′ly, adv.
sin•cere′ness, n.
- free of deceit, hypocrisy, or falseness;
earnest:a sincere apology. - genuine;
real:a sincere effort to improve; a sincere friend. - pure;
unmixed;
unadulterated. - [Obs.]sound;
unimpaired.
- Latin sincērus pure, clean, untainted
- 1525–35
sin•cere′ness, n.
- 1. frank, candid, honest, open, guileless; unaffected. See earnest 1.
- 1. 2. false.
'Sincerely yours' also found in these entries (note: many are not synonyms or translations):