uncomplimentary
un-com-pli-men-ta-ry
adjective
Expressing criticism or disapproval; not flattering or praising someone or something.
"His remarks were rather uncomplimentary."
Thesaurus
Synonyms: unflattering, snide, deprecating, depreciatory, dislogistic, deprecative, deprecatory, derogatory, depreciative, dyslogistic, slighting, belittling
Antonyms: complimentary, flattering