[im-uh-choor, -toor, -tyoor, -chur]

Origin of immature

First recorded in 1540–50, immature is from the Latin word immātūrus unripe, hence, untimely. See im-2, mature
Related formsim·ma·ture·ly, adverbim·ma·ture·ness, noun

Synonyms for immature Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2018

Examples from the Web for immaturely

Historical Examples of immaturely

  • It was not easy to conceive of her as being the mother of a son so immaturely mature.

    The Black Bag

    Louis Joseph Vance

  • Immaturely loveth the youth, and immaturely also hateth he man and earth.

    Thus Spake Zarathustra

    Friedrich Nietzsche

  • Immaturely and unconsciously sexual, she looked with more hope of satisfaction at male faces than at female.

    What Not

    Rose Macaulay

  • He rose to be a young man of great promise, as to abilities; and died too immaturely for his fame.

    The English Spy

    Bernard Blackmantle

  • We should use these advantages well, and to do so we should not immaturely pursue greater ones.

British Dictionary definitions for immaturely


  1. not fully grown or developed
  2. deficient in maturity; lacking wisdom, insight, emotional stability, etc
  3. geography a less common term for youthful (def. 4)
Derived Formsimmaturity or immatureness, nounimmaturely, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for immaturely



1540s, "untimely, premature," from Latin immaturus "untimely, unripe," from assimilated form of in- "not, opposite of" (see in- (1)) + maturus (see mature (v.)). In 16c., usually in reference to early death; modern sense of "not fully developed" first recorded 1640s. In reference to mentalities or behaviors not considered age-appropriate, from 1920.

Online Etymology Dictionary, © 2010 Douglas Harper

immaturely in Medicine


[ĭm′ə-chur, -tur]
  1. 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.