Sincere

имя прилагательное 1) искренний, чистосердечный Синоним(ы): genuine, heartfelt, honest, open, unfeigned, frank, candid, wholehearted Антоним(ы): affected, dishonest, feigned, half-hearted, hypocritical, insincere, pretended, spurious 2) подлинный, настоящий; правдивый, правильный, верный Синоним(ы): genuine, pure, true, veracious, correct, exact 3) чистый, незамутнённый, неразбавленный

Большой англо-русский словарь

Sincere

adjective (sincerer; sincerest) Etymology: Middle French, from Latin sincerus whole, pure, genuine, probably from sem- one + -cerus (akin to Latin crescere to grow) — more at same, crescent 1. a. free of dissimulation ; honest
Example: a sincere interest b. free from adulteration ; pure
Example: a sincere doctrine
Example: sincere wine 2. marked by genuineness ; truesincerely adverbsincereness noun Synonyms: sincere, wholehearted, heartfelt, hearty, unfeigned mean genuine in feeling. sincere stresses absence of hypocrisy, feigning, or any falsifying embellishment or exaggeration
Example: a sincere apology. wholehearted suggests sincerity and earnest devotion without reservation or misgiving
Example: promised our wholehearted support. heartfelt suggests depth of genuine feeling outwardly expressed
Example: expresses our heartfelt gratitude. hearty suggests honesty, warmth, and exuberance in displaying feeling
Example: received a hearty welcome. unfeigned stresses spontaneity and absence of pretense
Example: her unfeigned delight at receiving the award.

Энциклопедический словарь Мерриама-Вебстера