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Peccant comes from the Latin verb peccare, which means "to sin," "to commit a fault," or "to stumble," and is related to the better-known English word peccadillo ("a slight offense"). Etymologists have suggested that peccare might be related to Latin ped- or pes, meaning "foot," by way of an unattested adjective, peccus, which may have been used to mean "having an injured foot" or "stumbling." Whether or not a connection truly exists between peccant and peccus, peccant itself involves stumbling of a figurative kind-making errors, for example, or falling into immoral, corrupt, or sinful behavior."
Origin of peccant
Latin peccant-, peccans, present participle of peccare to stumble, sin
First Known Use: circa 1604
Medical Definition of peccant
: causing disease <specific virtues…of drugs, as opposed to the unspecific adjustment of “peccant humours,” were recognized in the 16th and 17th centuries—Joseph Needham>
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Medical Dictionary: Definition of "peccant"
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