שָׂרָף

From LSJ

Ἑαυτὸν οὐδεὶς ὁμολογεῖ κακοῦργος ὤν → Nemo maleficus se fatetur maleficum → Von sich gibt keiner zu, dass er ein Schurke ist

Menander, Monostichoi, 158

English (Strong)

from שָׂרַף; burning, i.e. (figuratively) poisonous (serpent); specifically, a saraph or symbolical creature (from their copper color): fiery (serpent), seraph.
the same as שָׂרָף; Saraph, an Israelite: Saraph.