monogamy
I've always believed that if I get married, the marriage will be strictly monogamous.
The researchers are working with monogamous couples, one of whom is infected with the virus.
I am in a committed monogamous relationship.
Female gorillas are highly monogamous.
SMART Vocabulary: related words and phrases Marriage, cohabitation & other relationships
adulteress
affinal
as husband and wifeidiom
be an itemidiom
be shacked upidiom
have an affair
have something going with someoneidiom
hear wedding bellsidiom
hitched
honest
matrimonially
matrimony
monogamist
monogamously
ménage à trois
shack
shack up
situationship
something
together
You can also find related words, phrases, and synonyms in the topics:
Animal (non-human) behaviour