@@@ to the Elves does not have the same negative connotations as English, but it may have this sense when used by Men
Quenya
curuni
witch
curuni
noun. witch, *sorceress, female magician (not necessarily evil)
Sindarin
curunis
noun. witch
Beware, older languages below! The languages below were invented during Tolkien's earlier period and should be used with caution. Remember to never, ever mix words from different languages!
Early Quenya
kuruni
noun. witch
felusi
noun. witch
Gnomish
curus
noun. witch
curuni _("k")_noun "witch" (of the good magic) (LT1:269)