monogamy
/məˈnɑːgəmi/
noun
Britannica Dictionary definition of MONOGAMY
[noncount]
1
:
the state or practice of being married to only one person at a time
—
compare polygamy
2
:
the state or practice of having only one sexual partner during a period of time
— monogamous
/məˈnɑːgəməs/
adjective