Definition of under the illusion
- He was under the illusion that he was a good player.
: in or into a position below or beneath something
: below or short of some quantity, level, or limit
: in or into a condition of subjection, subordination, or unconsciousness
: below or beneath so as to be overhung, surmounted, covered, protected, or concealed by
: subject to the authority, control, guidance, or instruction of
: receiving or undergoing the action or effect of
: lying or placed below, beneath, or on the ventral side
: facing or protruding downward
: lower in rank or authority : subordinate
: the action of deceiving
: the state or fact of being intellectually deceived or misled : misapprehension
: an instance of such deception
What made you want to look up under the illusion? Please tell us where you read or heard it (including the quote, if possible).