כָּשַׁף
From LSJ
Φιλοκαλοῦμέν τε γὰρ μετ' εὐτελείας καὶ φιλοσοφοῦμεν ἄνευ μαλακίας → Our love of what is beautiful does not lead to extravagance; our love of the things of the mind does not makes us soft.
English (Strong)
a primitive root; properly, to whisper a spell, i.e. to inchant or practise magic: sorcerer, (use) witch(-craft).