complimentary

Synonyms: adulatory appreciative approbative approbatory approving celebrating commendatory congratulatory courtly encomiastic encomiastical eulogistic fair-spoken fawning highly favorable honeyed honoring laudatory panegyrical plauditory polite praiseful respectful sycophantic unctuous well-wishing with highest recommendation with high praise

Antonyms: blaming censuring critical denouncing disparaging insulting reproachful unflattering

Synonyms: as a perk chargeless comp costless courtesy donated free lunch free of charge gratis gratuitous honorary on the house

Antonyms: for sale