toyish

/ˈtɔɪɪʃ/
adjective
  1. Resembling or characteristic of a toy; small, playful, or not serious in appearance or function.
    • The phone's toyish design appealed to children but not to adults.
    • Her toyish enthusiasm made the game more fun for everyone.
    • The car had a toyish look with its bright colors and tiny wheels.
Antonyms
What does "toyish" mean? | whatsthatwordmean | whatsthatwordmean