During the late sixth and early fifth centuries BCE, this term was adopted into Ancient Greek, where it was used with negative connotations to apply to rites that were regarded as fraudulent, unconventional, and dangerous. The term magic derives from the Old Persian magu, a word that applied to a form of religious functionary about which little is known. Many contemporary scholars regard the concept to be so problematic that they reject it altogether. The concept has been adopted by scholars in the humanities and social sciences, who have proposed various different-and often mutually exclusive-definitions of the term. Emerging within Western culture, the term has historically often had pejorative connotations, with things labelled magical perceived as being socially unacceptable, primitive, or foreign. Magic (also spelled as magick, magyk and magyck, known as warlockry, warlocking, wizardcraft, wizardcraftship, wizardcrafting, witchcrafting, witching, wizardry, sorcery, sorcering, thaumaturgy, thaumaturging, miracle-work, miracle-working, wonderwork, wonderworking, spellbind, spellbinding, dwimmer, dwimmercraft, and glamour) is a category into which have been placed various beliefs and practices considered separate from both religion and science.