SINCERE

adj. honest, truthful, true, veracious, genuine, heartfelt, true-hearted, undissembling, unfeigned, open, (open and) above-board, straightforward, direct, frank, candid, guileless, artless, Colloq upfront, on the level, on the up and up I took her criticism as a sincere desire to see improvement in my work You have always been sincere in your emotional involvements.