Bible Dictionaries
Indecinable

Webster's Dictionary

(1):

(a.) Not declinable; not varied by inflective terminations; as, nihil (nothing), in Latin, is an indeclinable noun.

(2):

(n.) An indeclinable word.

Bibliography Information
Webster, Noah. Entry for 'Indecinable'. Noah Webster's American Dictionary. https://www.studylight.org/​dictionaries/​eng/​web/​i/indecinable.html. 1828.