im·ma·ture

[im-uh-choor, -toor, -tyoor, -chur]
adjective
1.
not mature, ripe, developed, perfected, etc.
2.
emotionally undeveloped; juvenile; childish.
3.
Physical Geography, youthful ( def 5 ).
4.
Archaic. premature.

Origin:
1540–50; < Latin immātūrus unripe, hence, untimely. See im-2, mature

im·ma·ture·ly, adverb
im·ma·ture·ness, noun


2. callow, puerile, babyish.
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2013.
Cite This Source Link To immature
00:10
Immature is always a great word to know.
So is interrobang. Does it mean:
a printed punctuation mark (‽), available only in some typefaces, designed to combine the question mark (?) and the exclamation point (!), indicating a mixture of query and interjection, as after a rhetorical question.
a calculus or concretion found in the stomach or intestines of certain animals, esp. ruminants, formerly reputed to be an effective remedy for poison.
Collins
World English Dictionary
immature (ˌɪməˈtjʊə, -ˈtʃʊə) [Click for IPA pronunciation guide]
 
adj
1.  not fully grown or developed
2.  deficient in maturity; lacking wisdom, insight, emotional stability, etc
3.  geography a less common term for youthful
 
imma'turity
 
n
 
imma'tureness
 
n
 
imma'turely
 
adv

Collins English Dictionary - Complete & Unabridged 10th Edition
2009 © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins
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Etymonline
Word Origin & History

immature
1548, "untimely, premature," from L. immaturus "untimely, unripe," from in- "not" + maturus (see mature). In 16c., usually in ref. to death; modern sense of "not fully developed" first recorded 1641.
Online Etymology Dictionary, © 2010 Douglas Harper
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American Heritage
Medical Dictionary

immature im·ma·ture (ĭm'ə-ty&oobreve;r', -t&oobreve;r', -ch&oobreve;r')
adj.
Not fully grown or developed.

The American Heritage® Stedman's Medical Dictionary
Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.
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Example sentences
The immature parasites drill through the wall of a snail's gut and settle in
  the digestive gland.
It kept us immature, in a way, kept us from developing any individuality.
That's either really evil or really immature or both.
Plants also discourage animal browsing on green leaves and immature fruits with
  a bitter taste.
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