from The American Heritage® Dictionary of the English Language, 4th Edition
- adj. Not feigned or affected; genuine: sincere indignation.
- adj. Being without hypocrisy or pretense; true: a sincere friend.
- adj. Archaic Pure; unadulterated.
from Wiktionary, Creative Commons Attribution/Share-Alike License
- adj. earnest; meaning what one says or does; truthful.
- adj. meant truly or earnestly.
from the GNU version of the Collaborative International Dictionary of English
- adj. Pure; unmixed; unadulterated.
- adj. Whole; perfect; unhurt; uninjured.
- adj. Being in reality what it appears to be; having a character which corresponds with the appearance; not falsely assumed; genuine; true; real.
- adj. Honest; free from hypocrisy or dissimulation.
from The Century Dictionary and Cyclopedia
- Sound; whole; unbroken; without error, defect, or injury.
- Pure; unmixed; unadulterated; free from imitation; good throughout: as, sincere work.
- Having no admixture; free; clear: followed by of.
- Unalloyed or unadulterated by deceit or unfriendliness; free from pretense or falsehood; honestly felt, meant, or intended: as, a sincere wish; a sincere effort.
- Free from duplicity or dissimulation; honest in speech or intention; guileless; truthful; frank.
- Morally pure; undepraved; upright; virtuous; blameless.
- Synonyms and Fair, Open, etc. (see candid); Cordial, Sincere, etc. (see hearty), unfeigned, undissembling, artless, heartfelt.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- adj. characterized by a firm and humorless belief in the validity of your opinions
- adj. open and genuine; not deceitful
Latin sincērus; see ker-2 in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)
From Middle French sincère, from Latin sincerus ("genuine"), from Proto-Indo-European *sin- + *ker- (“grow”), from which also Ceres ("goddess of harvest") from which English cereal. (Wiktionary)