1. Bob got a ride to the party with his friends, but they left without him and he had no way to get home. They left him high and dry.
2. When you buy a package vacation trip through a travel agency, be sure that it is a company that has a good reputation. Too many companies have gone out of business, leaving those who have already paid their money high and dry.

Synonyms: leave (someone) in the lurch. Similar to: leave (someone) holding the bag. The expression probably originates from the idea of a ship stranded on high ground, leaving it out of water (dry).