Translation guide
The English word "pervert" can refer to a person with abnormal sexual desires or to the act of distorting something from its original meaning. This guide focuses on the sexual sense, which is the most common use for learners.
To refer to a person with abnormal or unacceptable sexual behavior or desires.
The most common and direct translation. Can be used as a noun or adjective. Often used in casual contexts, but can be offensive.
That person is a pervert.
perverted act
Specifically refers to a molester or groper, especially on public transportation. A common and serious term.
I was groped by a pervert on the train.
A slightly crude, colloquial term for a lecher or pervert. Often used jokingly among friends.
He's just a pervert.
Literally 'erotic old man'. Refers to a lecherous middle-aged or older man.
That pervy old guy is hitting on young girls again.
A formal, clinical term for a sexual pervert or paraphiliac. Used in psychology or legal contexts.
He is receiving treatment as a sexual pervert.
To change something from its original purpose or meaning, especially in a negative way.
To distort, warp, or pervert something like truth, facts, or justice. Transitive verb.
He perverted the facts.
To misinterpret or twist someone's words or meaning deliberately.
To abuse or misuse something for a bad purpose; to pervert the use of something.
He perverted his authority.
While 変態 is the most direct translation, it is a strong word and can be highly offensive. Use with caution. In many situations, it's better to describe the specific behavior rather than labeling someone.
痴漢 specifically refers to physical sexual harassment like groping, especially in crowded places. 変態 is a broader term for any sexual deviancy. If someone is a molester, use 痴漢; for other types of perversion, 変態 may be more appropriate.
He perverted my words.