proteu

(figuratively, masculine) a fickle man
(derogatory, masculine) obsequious
(masculine) olm (Proteus anguinus, a species of cave-dwelling salamander of the Dinaric Alps)

Derived from Ancient Greek Πρωτεύς (Prōteús), a sea god in Greek mythology who could change his shape at will.

olm

protée anguillard

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