Indeclinable
Pronunciation : In`de*clin"a*ble
Part of Speech : a.
Etymology : [L. indeclinabilis: cf. F. ind?clinable. See In- not, and Decline.] (Gram.)
Definition : Defn: Not declinable; not varied by inflective terminations; as, nihil (nothing), in Latin, is an indeclinable noun. -- n.
Defn: An indeclinable word.
Source : Webster's Unabridged Dictionary, 1913