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

---

Other Word Forms

• indeclinableness
  noun
• indeclinably
  adverb

Etymology

Origin of indeclinable

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

Example Sentences

“I have the experience of resistance and I have the experience of making indeclinable decisions.”

From Seattle Times • Jan. 13, 2023

An Adverb, considered as a separate part of speech, is a single indeclinable word, significant of time, place, or any other circumstance or modification of an action or attribute.

From Elements of Gaelic Grammar by Stewart, Alexander

A noun which has no distinction of cases; an indeclinable noun.

From Webster's Unabridged Dictionary by Webster, Noah

Arsa said, quoth, indeclinable; used only in the Pret.

From Elements of Gaelic Grammar by Stewart, Alexander

Dates 371, 2-5; —— as indeclinable nouns, 371, 6; —— in leap year, 371, 7.

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