Definition of -o in English:

-o

suffix

Forming chiefly informal or slang variants or derivatives such as beano, wino.

Origin

perhaps from oh1, reinforced by abbreviated forms such as hippo, photo.

Definition of -o in:

Get more from Oxford Dictionaries

Subscribe to remove adverts and access premium resources

Word of the day antebellum
Pronunciation: ˌantɪˈbɛləm
adjective
occurring or existing before a particular war…