commendation, approval - a message expressing a favorable opinion; "words of approval seldom passed his lips"

superlative - an exaggerated expression (usually of praise); "the critics lavished superlatives on it"

encomium, eulogy, paean, panegyric, pean - a formal expression of praise

good word, recommendation, testimonial - something that recommends (or expresses commendation) of a person or thing as worthy or desirable

compliment - a remark (or act) expressing praise and admiration