parasite

From Wiktionary

Pronunciation[change]

Noun[change]

Singular
parasite

Plural
parasites

  1. (pejorative) A parasite person who lives on other people's expense and gives little or nothing back.
  2. (biology) A parasite is an organism that lives on or in another organism of a different species and benefits from living on or in that other organism.

Related words[change]