If you're looking for synonyms for the word "propositioned", there are many similar phrases that you can use to express the same meaning. Here are a few examples: offered a proposition, proposed an offer, made a proposal, suggested an idea, presented a proposal, put forth a proposal, advanced an argument, extended an invitation, made an overture, and gave a business proposition. All of these phrases convey the sense of offering something or proposing a potential course of action, and can be used in a variety of contexts from business to personal relationships. So if you want to express the same idea as "propositioned", try one of these synonyms instead!