monomorphemic

Related to monomorphemic: morpheme

monomorphemic

(ˌmɒnəʊmɔːˈfiːmɪk) adj (Linguistics) linguistics containing only one morpheme

mon•o•mor•phe•mic

(ˌmɒn oʊ mɔrˈfi mɪk)

adj. containing only one morpheme, as the words wait and gorilla. [1935–40]
Thesaurus
Adj.1.monomorphemic - consisting of only one morpheme; "`raise' is monomorphemic but `rays' is not"