A primitive root; properly, to whisper a spell, i.e. To inchant or practise magic -- sorcerer, (use) witch(-craft).
H3784. kashaph
כִּשֵּׁף verb Pi`el denominative practice sorcery (Assyrian kašâpu, id.); — Perfect3masculine singular: וְיִדְּעוֺנִ֑י אוֺב וְעָשָׂה וְכִשֵּׁף וְנִחֵשׁ וְעוֺנֵן2 Chronicles 33:6 (of Manasseh); elsewhere only Participle as substantive masculine singular sorcerer, in Israel, מְכַשֵּׁף Deuteronomy 18:10 (following וּמְנַחֵשׁ מְעוֺנֵן קְסָמִים קֹסֵם); feminine singular מְכַשֵּׁפָה = sorceress Exodus 22:17 (E); masculine plural מְכַשְּׁפִים Malachi 3:5 (named with adulterers and falseswearers); of diviners, or astrologers in Egypt (חַרְטֻמִּים q. v.) Exodus 7:11 (P; "" חֲכָמִים); in Babylon Daniel 2:2 (+ כַּשְׂדִּים אַשָּׁפִים, חַרְטֻמִּים,).