Synonyms of grownup
- 1. adult, grownup, person, individual, someone, somebody, mortal, soul
- usage: a fully developed person from maturity onward
- 1. adult, big, full-grown, fully grown, grown, grownup, mature (vs. immature)
- usage: (of animals) fully developed; "an adult animal"; "a grown woman"
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Definition and meaning of grownup (Dictionary)