Nouns

(n)proposition(logic) a statement that affirms or denies something and is either true or false
(n)suggestion, proposition, proffera proposal offered for acceptance or rejection“it was a suggestion we couldn't refuse”
(n)propositionan offer for a private bargain (especially a request for sexual favors)
(n)proposal, propositionthe act of making a proposal“they listened to her proposal”
(n)propositiona task to be dealt with“securing adequate funding is a time-consuming proposition”

Verbs

(v)propositionsuggest sex to“She was propositioned by a stranger at the party”