- The definition of indeclinable is a grammar term that is a word that must be determined from its context because it does not have anything added to show a grammatical category such as tense, gender, mood or number.
An example of an indeclinable word is the word "must" or the word "coffee."
indeclinable definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
Gram. not declinable; having no case inflections
indeclinable definition by American Heritage Dictionary
- Without grammatical inflection.
- Of or being a word that lacks grammatical inflection though belonging to a form class whose members are usually inflected.