'uninflected' definitions:

Definition of 'uninflected'

From: WordNet
adjective
(of the voice) not inflected; "uninflected words"; "monotonic uninflected speech" [ant: inflected]
adjective
Not inflected; "`boy' and `swim' are uninflected English words" [ant: inflected]
adjective
Expressing a grammatical category by using two or more words rather than inflection [syn: analytic, uninflected] [ant: synthetic]