fantasize
UK: ˈfæntəsaɪz | US: ˈfæntəsaɪz
vi. to imagine or create unrealistic or improbable scenarios
vt. to envision something in an idealized or fanciful way
The word traces back to Greek phantasia (imagination), which entered Latin and later Old French as fantasie (illusion, whim). The verb-forming suffix -ize was added in English, turning the noun "fantasy" into an action meaning "to indulge in imaginative or unrealistic thoughts." The evolution reflects a shift from abstract imagination (Greek) to playful creativity (Modern English).
She would often fantasize about traveling the world.
Writers sometimes fantasize alternate endings for their stories.
He tends to fantasize scenarios where he’s the hero.
Daydreaming lets children fantasize freely.
It’s unhealthy to constantly fantasize about perfection.