- sincere
- adj1. open, open-hearted, ingenuous, guileless, artless, undeceptive, undeceitful, undeceiving, unfeigning, undissembling, undissimulating; aboveboard, open and aboveboard, up front, out front, no-nonsense, Sl. on the level, Sl. up and up or on the up and up; upright, upstanding, straight, square, fair and square, square-dealing, plain-dealing, square-shooting, straight-shooting; honest, trustworthy, Inf. trusty, uncorrupt, uncorrupted, Inf. O.K.2. candid, frank, forthright, foursquare, straightforward, straight-from-the-shoulder; plain, plain-spoken, plain-speaking, downright, outright, explicit, unequivocal, unambiguous, undisguised, Inf. straight-out, Inf. flat-footed, Inf. matter-of-fact; genuine, real, true, truehearted, heartfelt, veracious, bona fide, all wool and a yard wide; natural, unaffected, uncontrived, unassuming, inartificial, unvarnished, unpretentious, unpretending.3. earnest, fervent, fervid, serious, dedicated, resolute, single-hearted, single-minded, wholehearted.
A Note on the Style of the synonym finder. 2014.