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guinea pig

guinea pig

44 3.5
A person who takes part in an experiment so others can see the results
  • noun
  • /ˈɡɪni pɪɡ/
  • Informal
translation icon : conejillo de Indias
  • Don't you realize you're being used as guinea pigs for Big Pharma?
  • used as guinea pigs
  • treated as guinea pigs

Maybe they're waiting to see how things pan out in the USA, the Guinea pig of countries.

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Examples

  • I had offered myself as a guinea pig for certain tests involving glands and connective tissue.

    Fiction book (1992)
  • Thank you for being my guinea pig.

  • So thank you for being the the first Guinea pig, so to speak.

  • We need a guinea pig.

  • I am through being your guinea pig.

  • Who wants to be the first guinea pig?

  • So I want to thank you for being the Guinea pigs of this course.

  • And I can think of no better guinea pigs than you.

  • So I volunteered to be a Guinea pig for motion sickness research.

  • I volunteered to be a guinea pig for the new medical trial to see how the treatment works.

Synonyms

subject
vsguinea pig
  • Formal
427 4.1

A thing that someone looks at or studies

is specifically a person chosen to try or be tested for observation
lab rat
vsguinea pig
  • Offensive
18 6.1

A person used by others for tests who often feels watched or controlled

is someone who tries new things voluntarily for others to observe results

Surface Forms

guinea pig singular
guinea pigs plural

Morphology

guinea + pig

The literal words 'guinea' and 'pig' denote an animal, and the MWE is a metaphorical extension from animals commonly used in experiments to a person used as a test subject. This motivated, cross-linguistically attested metaphor makes the connection partially predictable for learners who know the constituents, but the specific human-as-test-subject sense is not fully derivable without prior exposure.

Etymology

Guinea pig for 'a person who is used as a subject in an experiment' comes from the animal's long use in scientific tests. Because doctors and scientists tried medicines on actual guinea pigs, people began to call human test subjects 'guinea pigs'—that is, 'someone used in an experiment'.