Synonyms and antonyms of Fidelity, infidelity and marriage problems in British Thesaurus

a bit on the side ()

someone you have a sexual relationship with, even though you are married or in a serious relationship with someone else

adulterer (noun)

old-fashioned a married person who has sex with someone who is not their husband or wife

adulteress (noun)

old-fashioned a married woman who commits adultery

adulterous (adjective)

involving or taking part in adultery

adultery (noun)

sex that takes place between a married person and someone who is not their husband or wife

affair (noun)

a sexual relationship between two people, especially when one of them is married to someone else

another woman ()

a woman who you have a sexual relationship with when you are married to someone else or are involved in a serious relationship with someone else

bigamy (noun)

the crime of being married to more than one person at the same time

cheat (verb)

to have sex with someone who is not your husband, wife, or partner

cheat on ()

to secretly have sex with someone other than your husband, wife, or partner. You can also say that someone is unfaithful to their husband, wife, or partner

cuckold (noun)

old-fashioned an insulting word for a man whose wife has sex with another man

cuckold (verb)

old-fashioned if a wife cuckolds her husband, she has sex with another man

cuckold (verb)

old-fashioned if a man cuckolds another man, he has sex with the other man’s wife

deceive (verb)

old-fashioned if someone deceives their husband, wife, or partner, they have a sexual relationship with someone else

extramarital (adjective)

involving a married person and another person who is not their marriage partner

faithful (adjective)

not having sex with anyone other than your partner

fidelity (noun)

the attitude or behaviour of someone who is willing to have sex only with their husband, wife, or partner

fool around ()

to have a sexual relationship with someone who is not your usual partner

infidelity (noun)

a situation in which someone has sex with someone who is not their husband, wife, or partner

in flagrante delicto (adverb)

while having sex with someone, especially someone who is not your regular partner. In flagrante delicto is often simply called in flagrante.

lover (noun)

the sexual partner of someone who is married to another person

love triangle (noun)

a situation in which one of the partners in a romantic or sexual relationship also loves someone else

marriage guidance (noun)

British advice given by a trained person to married people who are having problems in their relationship. The American word is marriage counseling.

mistress (noun)

a woman who is having a sexual relationship with a married man

monogamy (noun)

the practice of having only one sexual relationship at a time

on the side (informal)

informal if someone has or is getting a bit on the side, they are secretly having a sexual relationship with a second partner

the other woman ()

the woman who you are having a sexual relationship with when you are married to someone else or are involved in a serious relationship with someone else

play around (informal)

informal If someone who is married or has a partner plays around, they have sexual relationships with other people

play away (phrasal verb)

Britishinformal if someone who is in a long-term relationship plays away, they have a sexual relationship with someone else

Relate ()

a British counselling organization that helps people who are having problems with their marriage or relationships

the seven-year itch ()

a married person’s feeling of being bored with their partner and wanting to start a sexual relationship with someone else

two-time (verb)

informal to be dishonest with your sexual partner by secretly having a relationship with another person at the same time

unfaithful (adjective)

having a sexual relationship with someone who is not your husband, wife, or partner

untrue (adjective)

old-fashioned not loyal, especially to your husband or wife