Synonyms for guinea-pig
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- 1. subject, case, guinea pig, person, individual, someone, somebody, mortal, soul
- usage: a person who is subjected to experimental or other observational procedures; someone who is an object of investigation; "the subjects for this investigation were selected randomly"; "the cases that we studied were drawn from two different communities"
- 2. guinea pig, Cavia cobaya, cavy
- usage: stout-bodied nearly tailless domesticated cavy; often kept as a pet and widely used in research