There are various synonyms for the phrase "ran dry". Some of the most common ones include exhausted, depleted, drained, used up, and spent. All of these words convey the idea of something important or necessary coming to an end, leaving nothing behind. For example, a well might run dry, meaning that all the water has been drawn out from it. Similarly, a person's savings account might run dry, leaving them with no money to spend. The phrase "ran dry" can also be used metaphorically to describe situations where something important has been exhausted or depleted. For example, a writer's creative well might run dry, leaving them with no inspiration to write.