(a) kazandığı kendisinin olmak şartıyla.
Two men were playing games for keeps. (b) ciddiyetle,
ciddî olarak.
He found out that his rival was not fooling but competing with him for keeps. (c) temelli, ebediyen, ilelebet.
After his experience in foreign countries he came home for keeps. (d) geri dönmemek/vermemek şartıyla.