noun

mania

MAY-nee-uh/ˈmeɪniə/

An intense enthusiasm or craze.

The collector's mania for toy trains fills the tabletop with models.

An enthusiast excitedly shows an unusually large carefully arranged collection of tiny toy trains on a small tabletop, animated expression conveying an intense craze; no branding, numbers or writing.
Etymology

Greek frenzy and mad passion broadened in English to a craze or uncontrollable enthusiasm.

More examples

  • A sudden mania for puzzles sweeps the school.
  • His collecting mania becomes an expensive hobby.

Forms

mania

Similar words

craze
Usually a widespread temporary enthusiasm.
obsession
Emphasizes persistent consuming preoccupation.