roar (n.) Look up roar at Dictionary.com
late 14c., from roar (v.) and Old English gerar.
roar (v.) Look up roar at Dictionary.com
Old English rarian "roar, wail, lament, bellow, cry," probably of imitative origin (compare Middle Dutch reeren, German röhren "to roar;" Sanskrit ragati "barks;" Lithuanian reju "to scold;" Old Church Slavonic revo "I roar;" Latin raucus "hoarse"). Related: Roared; roaring.