illusory
adj.
1590s, from French illusorie, from Late Latin illusorius "ironical, of a mocking character," from illus-, past participle stem of Latin illudere "mock at," literally "to play with," from assimilated form of in- "at, upon" (see in-(2)) + ludere "to play" (see ludicrous).
〔李〕[illus =toilludeordeceive欺骗；-ory ⇒“of illuding or deceiving欺骗的”→] a. having to do with illusion；deceptive迷惑人的，虚幻的