Translation guide
The English word 'penis' refers to the male reproductive organ. In Japanese, the most common and neutral term is 陰茎 (inkei), used in medical and formal contexts. In everyday conversation, euphemisms and childish words are more common, such as おちんちん (ochinchin) for children or casual talk. Direct translations can sound clinical or vulgar depending on context, so it's important to choose the right word for the situation.
To refer to the penis in a formal, medical, or scientific context.
The standard anatomical term. Used in medical settings, textbooks, and formal writing.
陰茎の構造について説明します。
I will explain the structure of the penis.
Loanword from English. Common in sex education and casual medical contexts, but can sound slightly clinical or foreign.
ペニスのサイズは個人差があります。
Penis size varies from person to person.
To refer to the penis in a casual, childish, or affectionate way, often used with children or in lighthearted conversation.
The most common childish word for penis. Used by and with young children, or in very casual, playful adult conversation.
男の子はおちんちんがあるよ。
Boys have a penis.
A slightly more casual or abbreviated form of おちんちん. Still childish but can be used among close friends jokingly.
Vulgar slang, similar to 'dick' or 'cock'. Used among men in very informal settings, can be offensive.
Avoid in polite or formal situations; can be highly inappropriate.
To refer to the penis indirectly or politely in adult conversation, avoiding childish or clinical terms.
Means 'male genitalia'. A polite, indirect term suitable for general conversation or health contexts.
男性器の清潔を保つことが大切です。
It's important to keep the male genital area clean.
Literally 'there'. A common euphemism for genitals, used by both men and women in casual conversation.
あそこがかゆいんです。
My private parts are itchy.
Literally 'one thing'. A traditional euphemism, often used in literature or by older generations.
To use explicit or crude language for the penis, often in sexual contexts or among close male friends.
Common vulgar slang, equivalent to 'dick'. Used casually among men, but can be offensive in mixed company.
ちんこがでかい。
He has a big dick.
A slang term possibly derived from Sanskrit, used in some subcultures or older slang. Not common in modern standard Japanese.
マラを立てる。
To get an erection.
Using ペニス or 陰茎 in casual conversation can sound overly clinical or awkward. In most everyday situations, euphemisms like あそこ or 男性器 are preferred. With children, おちんちん is standard.
おちんちん is the most neutral childish term, often used by parents. ちんちん is a bit more casual and can be used among kids. ちんこ is vulgar and should be avoided in polite or family settings.
ちんちんを触っちゃだめ！
Don't touch your penis!
I got a boner.
彼は一物を隠すように前を押さえた。
He covered his front as if to hide his penis.