fantasize

verb

fan·​ta·​size ˈfan-tə-ˌsīz 

fantasized; fantasizing

intransitive verb

: to indulge in reverie : to create or develop imaginative and often fantastic views or ideas

doing things I'd fantasized about in my sheltered childhood

—Diane Arbus

transitive verb

: to portray in the mind : fancy

likes to fantasize herself as very wealthy

fantasizer

ˈfan-tə-ˌsī-zər 

noun

Synonyms

• conceit [chiefly dialect]
• conceive
• conjure (up)
• dream
• envisage
• envision
• fancy
• fantasy
• feature
• ideate
• image
• imagine
• picture
• see
• vision
• visualize

Examples of fantasize in a Sentence

She fantasized that she had won a million dollars.

all those lottery players fantasizing themselves as living in extravagant luxury

Recent Examples on the Web

Some accounts fantasize that Trump’s college-age son, Barron, is running it. —Charlie Warzel, The Atlantic, 28 Mar. 2025

Concerned Mom in California Dear Mom: Mentally healthy adults do not spend their spare time fantasizing about extreme violence. —Abigail Van Buren, Boston Herald, 9 Feb. 2025

Mentally healthy adults do not spend their spare time fantasizing about extreme violence. —Jeanne Phillips, The Mercury News, 9 Feb. 2025

After learning her daughter will not return to Chile, however, she is forced to stop fantasizing about others’ lives and find comfort in unexpected places. —John Hopewell, Variety, 11 Mar. 2025

Word History

Etymology

fantasy entry 1 + -ize

First Known Use

1926, in the meaning defined at intransitive sense

Rhymes for fantasize

• advertise
• aggrandize
• agonize
• alibis
• alkalies
• alkalis
• amortize
• amplifies
• analyse
• analyze
• anywise
• authorize

Medical Definition

fantasize

verb

fan·​ta·​size

variants or British fantasise

ˈfant-ə-ˌsīz 

fantasized or British fantasised; fantasizing or British fantasising

intransitive verb

: to indulge in fantasy : create or develop imaginative and often fantastic views or ideas

fantasizes about running away from home

transitive verb

: to portray in the mind by fantasy

likes to fantasize herself as very famous