inquiline

/ˈɪnkwəˌlaɪn/
noun
  1. An animal or plant that lives in the home of another species without harming it, often as a lodger.
    • The barnacle is an inquiline that attaches to whales for a free ride.
    • Some species of ants are inquilines, living inside the nests of other ants without causing trouble.
    • Inquilines like certain beetles share the burrows of rodents without being parasites.
Antonyms
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