Definition of "varietism"

"Sexual varietism" is a more neutral term for those who relate sexually to several partners.

1971 February, March, Jack Jardine, Sibly Whyte, "Promiscuity vs. Sexual Varietism", Explorations into Sexual Behavior

It is important not to confuse sexual variety, in the form of varied techniques and positions for intercourse and varietism in the form of different partners.

1973, Paul F. Kaplan, Doing Sociology, page 99