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[dih-min-ish] /dɪˈmɪn ɪʃ/
verb (used with object)
to make or cause to seem smaller, less, less important, etc.; lessen; reduce.
Architecture. to give (a column) a form tapering inward from bottom to top.
Music. to make (an interval) smaller by a chromatic half step than the corresponding perfect or minor interval.
to detract from the authority, honor, stature, or reputation of; disparage.
verb (used without object)
to lessen; decrease.
Origin of diminish
late Middle English
1400-50; late Middle English; blend of diminuen (< Anglo-French diminuer < Medieval Latin dīminuere for Latin dēminuere to make smaller) and minishen minish
Related forms
diminishable, adjective
diminishment, noun
nondiminishing, adjective
prediminish, verb (used with object)
prediminishment, noun
undiminishable, adjective
undiminishableness, noun
undiminishably, adverb
undiminished, adjective
undiminishing, adjective
Synonym Study
5. See decrease. Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2018.
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Examples from the Web for undiminished
Contemporary Examples
Historical Examples
  • "He has done so," replied the countess, with undiminished stateliness.

    Fairy Fingers Anna Cora Mowatt Ritchie
  • From time to time it gave forth its tributaries, yet seemingly was undiminished.

    Child and Country Will Levington Comfort
  • She wanted him to see that her love was undiminished, and that he could count on it.

    The Explorer W. Somerset Maugham
  • The shouting from the Barracouta kept on with undiminished vigor.

    Jim Spurling, Fisherman

    Albert Walter Tolman
  • Heliet answered her gently, gravely, but held her own with undiminished calmness.

    A Forgotten Hero Emily Sarah Holt
  • Do I resign them to the custody of the gods, undiminished and unimpaired?

British Dictionary definitions for undiminished


not reduced or lessened


to make or become smaller, fewer, or less
(transitive) (architect) to cause (a column, etc) to taper
(transitive) (music) to decrease (a minor or perfect interval) by a semitone
to belittle or be belittled; reduce in authority, status, etc; depreciate
Derived Forms
diminishable, adjective
diminishingly, adverb
diminishment, noun
Word Origin
C15: blend of diminuen to lessen (from Latin dēminuere to make smaller, from minuere to reduce) + archaic minish to lessen
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
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Word Origin and History for undiminished

1580s, from un- (1) "not" + past participle of diminish.



early 15c., from merger of two obsolete verbs, diminue and minish. Diminue is from Old French diminuer "make small," from Latin diminuere "break into small pieces," variant of deminuere "lessen, diminish," from de- "completely" + minuere "make small" (see minus).

Minish is from Old French menuisier, from Latin minuere. Related: Diminished; diminishes; diminishing.

Online Etymology Dictionary, © 2010 Douglas Harper
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