Translation guide
The term 'onanism' is a formal, often clinical or literary term for masturbation. In Japanese, the most common and neutral word is 自慰 (jii), but other expressions exist depending on context and register.
To refer to the act of masturbation in a neutral, clinical, or formal context.
The standard, neutral term for masturbation. Used in medical, psychological, and formal contexts. Can be used for both sexes.
自慰は健康に害はないとされています。
It is said that masturbation is not harmful to health.
Loanword from English. Common in everyday conversation, but can sound slightly more direct or informal than 自慰.
The frequency of masturbation varies from person to person.
Derived from German 'Onanie'. Very common in casual speech, but can be considered vulgar or slangy. Often used among friends or in informal settings.
Apparently he masturbates every day.
A very formal, literary, or old-fashioned term for masturbation. Rarely used in modern conversation. Can carry a negative moral connotation.
I was taught that onanism is a sin.
To refer specifically to male masturbation in very informal or vulgar contexts.
To refer specifically to female masturbation in informal or vulgar contexts.
Vulgar slang for female masturbation. Highly informal and offensive to some.
She said she likes to masturbate.
While 自慰 is safe for most contexts, words like オナニー, せんずり, and シコる are highly informal and can be offensive. Use with caution and only in very casual settings with close friends. In formal writing or speech, stick to 自慰 or マスターベーション.
The doctor asked me about the frequency of masturbation.
Yesterday I was jerking off all day.