Liberal Dictionary English Dictionary
adjective Grammar.
- 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.”
adjective
- (of a noun or pronoun) having only one form; not declined for case or number
late 14c., originally in grammar, from French indéclinable, from Latin indeclinabilis, from indeclinatus “unchanged, constant,” from in- “not, opposite of” (see in- (1)) + declinatus, from declinare (see decline (v.)). Related: Indeclinably.