monogamist

As for girlfriends and partners, Waters says she is a serial monogamist.

But, “mainly” a serial monogamist, for the last twelve years he has been with his partner Michael.

In fact, however, Henry was more of a serial monogamist than a philanderer.

So many that, among his friends, he was known as a “serial monogamist.”

A former "card-carrying monogamist," as she puts it, she is now in an open relationship and newly engaged.

Parson Adams will not be forgotten, nor that gentle monogamist, the good Vicar of Wakefield.

Strindberg, notwithstanding his unhappy unions, is a staunch monogamist, and allowed the woman to go her way.

Poverty brings one blessing in Turkey—the poor man is of necessity a monogamist.

He is a strict monogamist, loyal in his married life and detests slavery as much as polygamy.

Isaac was a monogamist, though Jacob, through the artifice of Laban, became a polygamist.