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indeclinable

American  
[in-di-klahy-nuh-buhl] / ˌɪn dɪˈklaɪ nə bəl /

adjective

Grammar.

  1. not capable of being declined; having no inflected forms: used especially of a word belonging to a form class most of whose members are declined, as the Latin adjective decem, “ten.”

indeclinable British  
/ ˌɪndɪˈklaɪnəbəl /

adjective

  1. (of a noun or pronoun) having only one form; not declined for case or number

"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

Other Word Forms

Etymology

Origin of indeclinable

1400–50; late Middle English < Latin indēclīnābilis unchangeable, inflexible. See in- 3, declinable

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

Indeclinable nouns, also infinitives and phrases, are Neuter; as,— nihil, nothing; nefās, wrong; amāre, to love.

From New Latin Grammar by Bennett, Charles E. (Charles Edwin)

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023

Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.