prost

sum (Latin)

(copulative) I am, exist, have (with dative).

prosum (Latin)

(of medicines) I am good or beneficial.. (with a dative) I am useful or of use, do good, help, benefit, serve, profit.

prosit (German)

A toast used when drinking in company; cheers.

prost (German)

(now, _, very, informal, possibly, offensive) bless you (response to someone’s sneezing). Cheers (the usual toast when drinking alcohol).