indeclinable /ˌɪndɪˈklɑjnəb(ə)l/adjective 2noun 1forms 1 adjective2 •Not grammatically declinable; having no inflections. •That one cannot decline; unavoidable.He'd planned to work a double shift Friday night, but Gladys Silverman's indeclinable invitation threw a hefty wrench into David's plans. — 1994 noun1 •A word that is not grammatically inflected. formsindeclinables
