Translation guide
The English word 'leech' can refer to the blood-sucking worm, or metaphorically to a person who exploits others. This guide covers both meanings and how to express them naturally in Japanese.
Referring to the aquatic or terrestrial annelid worm that sucks blood.
Describing a person who clings to others and takes advantage of them, like a parasite.
While 蛭 (hiru) can be used metaphorically, it is less common than 寄生虫 (kiseichuu) for describing a person. Using 蛭 might sound overly literal or dramatic.
A leech sucked my blood in the river.
Katakana form, often used in biological or scientific contexts, or for emphasis.
Leeches are a type of annelid.
Literally 'parasite'. Commonly used metaphorically for a person who lives off others without contributing.
He clings to his parents like a leech.
Katakana form used metaphorically, similar to English. Less common than 寄生虫 but understood.
That guy is like a leech, always begging for money.
Verb meaning to sponge off someone, to mooch. Often used for people who constantly ask for money or favors.
He's always leeching off his friends.
Verb meaning to cling to someone emotionally or physically, often with a sense of desperation. Can imply a leech-like dependency.
She's still clinging to her ex-boyfriend like a leech.