/ dɪˈluːsɪv; NAmE / (also de·lu·sory / dɪˈluːsəri; NAmE ; -zəri/) adjective
( formal ) not real or true
SYN deceptive
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WORD ORIGIN
early 17th cent.: from Latin delus- mocked, from the verb deludere to mock, (from de- (with pejorative force) + ludere to play) + -ive .