kiddish

adjective2

1. •
   (informal) Of, like, or suitable for a child.

   • It had caught my eye specifically because of the shiny packaging and how like kiddish it sort of looked, so I thought it might to be fun to try on. — 2020
2. •
   (informal) Childish; immature.

   • So! here I find on kiddish mind / Traditionary lore instil'd. / Tho' fairly bookt, Nymph might have lookt / For poet's promise unfulfil'd. — 1855