Word.ws English Dictionary

guineapig

guineapig is the alternative spelling of guinea pig.

Meaning of guinea pig

Noun

guinea pig (plural guinea pigs)

  1. Any tailless rodent of the genus Cavia, which have short ears and superficially resemble large hamsters.
    1. (especially) A domestic guinea pig, Cavia porcellus, often kept as a pet.
  2. (figuratively) A living experimental subject.
    • He became a human guinea pig and was paid by the company.
    Synonyms:
    lab rat
  3. (dated, slang) A professional company director, without time or real qualifications for the duties.
  4. (obsolete) A midshipman in the East India service; (by extension) a low-skilled or non-proficient seaman.
    • A good seaman he is... none of your guinea-pigs.1748, Tobias Smollett, The Adventures of Roderick Random, page 183

Forms of guineapig

pluralguineapigs

Questions about guineapig

What is guineapig the alternative spelling of?
Guineapig is the alternative spelling of guinea pig.

Words near guineapig in the dictionary

  1. guineagrass
  2. Guineaman
  3. Guineamen
  4. Guinean
  5. Guineans
  6. guineapig
  7. guineapigs
  8. guineas
  9. Guineo-
  10. guinep
  11. guineps

Source and license

Adapted from Wiktionary: guineapig (page history and authors); guinea pig (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

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Cite this entry: “guineapig.” Word.ws, https://word.ws/guineapig. Based on Wiktionary, CC BY-SA 4.0.