Capable of being proposed.

plural of proposement

(business) A formal publicly released document outlining a need and inviting businesses to submit plans to fulfill that need.

plural of request for proposal

(idiomatic) An idea which is especially extreme, unorthodox or distasteful, often put forward in jest. / Used other than figuratively or idiomatically: see modest, proposal.

plural of modest proposal

Alternative form of counterproposal

plural of counter-proposal

(transitive with to) To ask someone if they want to become one's spouse.

Things don't always work out as they were planned.