Search Result for "monomorphemic": 
Wordnet 3.0

ADJECTIVE (1)

1. consisting of only one morpheme;
- Example: "`raise' is monomorphemic but `rays' is not"



WordNet (r) 3.0 (2006):

monomorphemic
    adj 1: consisting of only one morpheme; "`raise' is
           monomorphemic but `rays' is not"