Synonyms of 'illusion'
in the sense of daydream
a pleasant fantasy indulged in while awake
She perpetually drifted off into daydreams and made up fantasy stories in her head.
in the sense of fallacy
an incorrect or misleading notion based on inaccurate facts or faulty reasoning
This is the biggest fallacy of all.
in the sense of fancy
His book is a bold surrealist mixture of fact and fancy.
in the sense of hallucination
the experience of seeming to see something that is not really there
Perhaps the footprint was a hallucination.
in the sense of impression
a vague idea or belief
My impression is that they are totally out of control.
in the sense of mirage
Through my half-closed eyelids I began to see mirages.
in the sense of misapprehension
We were under no misapprehension about the scale of the problem.
in the sense of misconception
a false or mistaken view, idea, or belief
There are many fears and misconceptions about cancer.
Video: pronunciation of 'illusion'
Thesaurus for illusion from the Collins English Thesaurus