Derivational prefix or suffix used to form names of persons or places: e.g. Mc- (McGregor), Fitz- (Fitzgerald), -sen (Olsen), -by (Hornsby), -land (Oakland), -ford (Hartford), and so on. onomastics, word...

Words in English with the suffix "-onym" refer to classes of words with a particular property. Most of them are classical compounds. For example an acronym is a word formed from the initial letters of other words. In some words, the -onym form has been...