5
green
4
jejune
2
immature
2
adolescent
2
juvenile
2
undeveloped
2
youngish
2
youthful
1
boyish
1
crude
1
greened
1
incipient
1
juvenile person
1
minor
1
sour
1
soured
1
tender
1
unfinished
1
unfledged
1
unformed
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APASmart Define. (2015). matured thesaurus. Retrieved September 22, 2026, from https://smartdefine.org/matured/thesaurus/antonyms
ChicagoSmart Define. 2015. "matured thesaurus" https://smartdefine.org/matured/thesaurus/antonyms (accessed September 22, 2026).
HarvardSmart Define 2015, matured thesaurus, Smart Define, viewed 22 September, 2026, <https://smartdefine.org/matured/thesaurus/antonyms>.
MLASmart Define. "matured thesaurus" 14 April 2015. Web. 22 September 2026. <https://smartdefine.org/matured/thesaurus/antonyms>