59 entries under adult topic. ×

4
reasonable
3
attain majority(verb, expression, advance, develop, perfect)
3
cultured(adjective, smooth, warm, full, familiar)
3
fill out(verb, expression, phrasal verb, advance, develop)
3
middle-aged(adjective, older, adolescence)
3
mushroom(verb, advance, develop, perfect, swell)
3
settle down(verb, expression, phrasal verb, advance, develop)
3
settled(adjective, established, developed)
3
shoot up(verb, expression, advance, develop, perfect)
3
virile(adjective, adolescence)
2
arrive(verb, advance, develop, perfect, relax)
2
reach adulthood(verb, expression, advance, develop, perfect)
2
round(verb, adjective, advance, develop, smooth)
2
serious
1
fully grown(verb, expression, adjective, develop, ready)
1
become experienced(verb, expression, advance, develop, perfect)
1
become wise(verb, expression, advance, develop, perfect)
1
in one's prime(expression, adjective, idiom, adolescence)
1
reach majority(verb, expression, advance, develop, perfect)
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APASmart Define. (2015). mature thesaurus. Retrieved October 1, 2026, from https://smartdefine.org/mature/thesaurus/synonyms
ChicagoSmart Define. 2015. "mature thesaurus" https://smartdefine.org/mature/thesaurus/synonyms (accessed October 1, 2026).
HarvardSmart Define 2015, mature thesaurus, Smart Define, viewed 1 October, 2026, <https://smartdefine.org/mature/thesaurus/synonyms>.
MLASmart Define. "mature thesaurus" 10 April 2015. Web. 1 October 2026. <https://smartdefine.org/mature/thesaurus/synonyms>