Definition of overenthusiastic in US English:

overenthusiastic

adjective

  • See overenthusiasm

    • ‘Expect all the personal touches and attention to detail you get when staying with particularly hospitable friends, but none of the intrusion you get when staying with overenthusiastic ones.’
    • ‘The majority of lines are delivered as though in a vacuum, by overenthusiastic children's TV presenters.’
    • ‘When he's finally handed the case of his life, he runs at it like an overenthusiastic puppy, hitting every cliché of the cop movie head on and failing at every single one.’
    • ‘The knocking gesture was exaggerated, like an overenthusiastic mime in slow motion.’
    • ‘He has one hand on the controls, one eye on the track ahead and is sharing a laugh over his shoulder with an overenthusiastic train buff.’

Pronunciation

overenthusiastic

/ˌoʊvərɪnˌθjuziˈæstɪk//ˌōvərinˌTHyo͞ozēˈastik/