unhyphenated

adjective2

1. •
   Lacking a hyphen.

   • The word cooperation is unhyphenated, though some also spell it as co-operation.
2. •
   (US, Canada) Of people, belonging to a single ethnicity or nationality.

   • Some believe it is an expression of Hebrew-Americanism, others think it is an expressio of Negro-Americanism, still other's think it is pure American, unhyphenated. — 1922