How do I Say and Write
"Sincere" in Spanish?

Pronunciation : Sin*cere"
Part of Speech : a.
Etymology : [L. sincerus, of uncertain origin; the first part perhaps akin to sin- in singuli (see Single), and the second to cernere to separate (cf. Discern): cf. F. sinc?re.]
Definition : 1. Pure; unmixed; unadulterated. There is no sincere acid in any animal juice. Arbuthnot. A joy which never was sincere till now. Dryden.

2. Whole; perfect; unhurt; uninjured. [Obs.] The inviolable body stood sincere. Dryden.

3. Being in reality what it appears to be; having a character which corresponds with the appearance; not falsely assumed; genuine; true; real; as, a sincere desire for knowledge; a sincere contempt for meanness. A sincere intention of pleasing God in all our actions. Law.

4. Honest; free from hypocrisy or dissimulation; as, a sincere friend; a sincere person. The more sincere you are, the better it will fare with you at the great day of account. Waterland.

Syn. -- Honest; unfeigned; unvarnished; real; true; unaffected; inartificial; frank; upright. See Hearty.

[Compar. Sincerer; superl. Sincerest.]
Source : Webster's Unabridged Dictionary, 1913