Translation guide
The English phrase "cheating heart" refers to a person's tendency to be unfaithful in romantic relationships, or the emotional state of being unfaithful. In Japanese, this concept is expressed through various words and phrases describing infidelity, unfaithfulness, or a wandering heart.
Describing a person's innate disposition to be unfaithful, or the emotional aspect of infidelity.
Literally 'cheating heart', this is the most direct equivalent. It refers to the inclination or desire to have an affair.
We broke up because of his cheating heart.
Describes a person who is prone to cheating by nature; a philandering disposition.
I can't trust her because she has a cheating heart.
A formal or literary term for infidelity or unchastity, often used in legal or serious contexts.
Those who harbor a cheating heart cannot find happiness.
Emphasizing the restless, easily distracted nature of romantic feelings.
Literally 'one's heart moves/shifts', meaning to transfer one's affections to another person.
His cheating heart means he never stays with one person for long.
Fickleness or capriciousness in love; a tendency to easily change romantic interests.
Focusing on the behavior rather than the disposition.
The most common word for cheating or having an affair. Can be used as a noun or suru-verb.
I will never forgive a cheating heart.
Adultery, specifically referring to extramarital affairs. More serious and often used in legal or social contexts.
浮気 (uwaki) is a general term for cheating, including casual flings or emotional affairs, and can apply to unmarried couples. 不倫 (furin) specifically means adultery, i.e., cheating within a marriage, and carries a heavier social stigma.
While 浮気心 is a direct translation, it is not as commonly used as the standalone 浮気. In many contexts, simply saying 浮気する人 (a person who cheats) or 浮気性 (cheating disposition) is more natural.
移り気な人とは付き合いたくない。
I don't want to date someone with a cheating heart.
A change of heart, often implying unfaithfulness or loss of interest in a partner.
I had noticed his cheating heart.
不倫関係がバレて離婚した。
The cheating heart led to divorce when the affair was exposed.