complimentary - approving, glowing, appreciative, admiring, rave, favorable, adulatory, commendatory, flattering, congratulatory, gratis, on the house, free of charge, for nothing, free, courtesy, gratuitous, costless

gift - gratuity, perk, tip, bonus, endowment, donation, largesse, goody bag, offering, award, benefaction, bestowal, care package, handout, freebie, present, aptitude, strength, talent, brilliance, ability, bent, capability, flair, skill