Antonyms of adj puerile

1 of 2 senses of puerile

Sense 2
adolescent, jejune, juvenile, puerile -- (displaying or suggesting a lack of maturity; "adolescent insecurity"; "jejune responses to our problems"; "their behavior was juvenile"; "puerile jokes")

INDIRECT (VIA immature) -> mature -- (characteristic of maturity; "mature for her age")

Similarity of adj puerile

2 senses of puerile

Sense 1
puerile -- (of or characteristic of a child; "puerile breathing")

Sense 2
adolescent, jejune, juvenile, puerile -- (displaying or suggesting a lack of maturity; "adolescent insecurity"; "jejune responses to our problems"; "their behavior was juvenile"; "puerile jokes")
       => immature (vs. mature) -- (characteristic of a lack of maturity; "immature behavior")