monoamorous

• monamorous (less common)

Attested since 1992, from monoamor(y) (which see) +‎ -ous, possibly modelled on polyamorous.

monoamorous (not comparable)

1. Being exclusively faithful to one partner; monogamous (especially as contrasted with polyamorous).
   • 1992 June 10, Jamais A. Cascio=, Bi/Polyamory Blend, alt.polyamory, Usenet:

     That is, if we were monogamous/monoamorous, she would not have had a chance to explore these feelings without threatening the relationship. Our first few threesomes were very much oriented towards Janice, with less attention given to me (which turns out to be okay; as the saying goes, "I like to watch")[.]