make a proposal—
1. offer or put forward a suggestion, plan, etc.:
- Porter made a proposal to hold secret negotiations, but the communist side did not accept it.
2. offer marriage to a person:
- He felt they had been cheated out of so many years together that maybe he would make a proposal to her soon.
make a proposition—
1. = make a proposal 1:
- He made a proposition to hold a complimentary film festival, one that would take a more extensive look at the older films.
2. make an indecent request to a woman:
- There are not many men who could get away with exposing themselves and making a proposition to an employee.