Synonyms:
undue, unjustified, unwarranted
Meaning: lacking justification or authorization; "desire for undue private profit"; "unwarranted limitations of personal freedom"
Usage examples
An inconsistent jealousy that had been unprovoked and unjustified, but for which she had suffered. She had known last night, when she winced under his sarcastic tongue, and later, when Saint Hubert had left them and his temper had suddenly boiled over, that she was paying for the unaccustomed strain that he was putting on his own feelings.