Parasite

/ˈpærəˌsaɪt/

Synonyms

  • leech
  • freeloader
  • hanger-on
  • mooch
  • sponger

Slang Meanings

A person who takes advantage of others' kindness.
Don't be such a parasite; get a job and contribute!
Someone who lives off someone else's success.
He's just a parasite, living in his brother's shadow.