Synonyms and related words :
against, con, depreciative, depreciatory, detracting, disadvantageous, disappointed, disapprobatory, disapproving, discontented, disenchanted, disgruntled, disillusioned, disparaging, displeased, dissatisfied, dissenting, indignant, low, opposed, opposing, pejorative, poor, slighting, turned-off, unappreciative, unapproving, unfavorable, unhappy