Synonyms and related words :
ban, blackball, blackballing, complaint, disagreement, disappointment, disapprobation, disapproval, discontent, discontentedness, discontentment, disenchantment, disesteem, disfavor, disgruntlement, disillusion, disillusionment, displeasure, disrespect, dissatisfaction, dissent, distaste, exclusion, indignation, low estimation, low opinion, objection, opposition, opposure, ostracism, protest, rejection, thumbs-down, unhappiness