verb (used without object) 1.to conceive fanciful or extravagant notions, ideas, suppositions, or the like (often followed by
about ):
to fantasize about the ideal job.
verb (used with object) 2.to create in one's fancy, daydreams, or the like; imagine: to fantasize a trip through space.
Also, especially British, fan·ta·sise.
Related forms fan·ta·siz·er, noun