monomorphemic

adj

1. (not-comparable)Consisting of only one morpheme; not divisible into smaller parts.

   “While some have analyzed *nuráke of an *-ák-derivaton of a stem *nur-, which is supposedly found in Old Sardinian toponyms such as Nora, Nure, this analysis rests on formal similarity only […] As long as the semantic value of the element nur- cannot be established, it cannot be ruled out that *nurak- was monomorphemic.”