Cordial
warm, zealous, sincere, cheery, cheerful, jovial, wholehearted, neighborly, well-meant, vivacious, gay, animated, jolly, ardent, genial, fervid, zestful, glowing, enthusiastic, genuine, avid, deepest, passionate, frank, glad, deep, intense, exuberant, profuse, eager, unalloyed, effusive, gushing, devout, deep-felt, unfeigned, unrestrained, fervent, warmhearted, authentic, amicable, heartwarming, impassioned, heartfelt, brotherly, responsive; see also friendly 1, happy 1, 2.
Antonyms false*, mock, sham.