(uncountable) Lightweight, mass-appeal theatrical productions such as pantomimes and musicals, as opposed to the "legitimate theater" of serious drama.

plural of illegitimate theater

(philosophy) An argument for the existence of sense-data, and thus a criticism of direct realism, according to which what we perceive (such as a stick that looks bent because it is viewed underwater) is distinct from the actual thing perceived (the straight stick).

plural of argument from illusion

Unsubstantiated, not based on fact or evidence.

Having or displaying malevolence or ill-will.

plural of ill turn

(dated) An act of unkindness or enmity. / (dated) A change for the worse.

Synonym of flash-lag effect

A tactile illusion where tapping separate regions of a person's skin in rapid succession (e.g. the elbow and the forearm) gives the impression of sequential taps "hopping" from one point to the next, even though the intermediate points were never touched.