Synonyms of guinea pig

Noun

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