unmatureadj.
/(ˌ)ʌnməˈtʃʊə/, /(ˌ)ʌnməˈtjʊə/, /(ˌ)ʌnməˈtʃɔː/, /(ˌ)ʌnməˈtjɔː/, U.S. /ˌənməˈtʃər/, /ˌənməˈtʃʊ(ə)r/, /ˌənməˈt(j)ʊ(ə)r/ = unmatured adj.
ΘΚΠ
the world > action or operation > undertaking > preparation > unpreparedness > [adjective] > unready or immature
green?a1300
rawa1398
indigest1398
unmatured?a1425
unripea1500
unseasonable1515
unbuilded1519
inchoate1534
unripened1561
uncivil1572
unmellowed1573
unmanured1577
unblown1587
ungrown1593
unpolished1594
rudimental1597
rude1600
unsalted1602
unseasoned1602
unlicked1612
embryon1613
unbakeda1616
unbloweda1616
unfledged1615
unmellow1615
sappya1627
embryous1628
unconcocteda1631
unkneaded1633
immature1635
sucking1648
vacuous1651
embryo1659
unelaborate1663
unmature1673
unformed1689
undeveloped1736
infantile1772
uncultivated1796
unelaborated1817
fetal1820
embryotic1823
embryonic1825
embryonary1833
sophomoric1837
seedling1843
rudimentary1851
unwrought1869
juvenescent1875
vealy1890
under-developed1892
1673 W. Cooper tr. Jehior xii. 44 in Philos. Epit. Every Lee, especially that of quicklime is a cold fire, and that same in the unmature Metals, that have yet their Sulphur, Mercury and Arsenick, may doubtless be of good use.
1764 D. Du Bois Poems Several Occas. 119 The unmature Attachment strongly binds, And hoodwinks Reason.
1862 Manch. Weekly Times 7 June Suppl. 288/3 Other fruit buds and grows and the unmature produce drops off unnoticed.
1977 Code Federal Regulations: 7 : Agric. (Office of Federal Register, U.S.) xviii. 275/1 From time to time FmHA will place in special trusts unmature loans evidenced by notes or other instruments.
2013 F. J. Ninivaggi Biomental Child Devel. iii. 275 Knowledge is gained and processed using these substantial but still unmature sensorimotor cognitive pathways.
This is a new entry (OED Third Edition, December 2014; most recently modified version published online March 2022).
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adj.1673