"Left high and dry" is an idiomatic expression that means to be abandoned, stranded, or left in a difficult situation without any support or assistance. There are several synonyms for this phrase, such as deserted, forsaken, isolated, marooned, stranded, neglected, and betrayed. Each of these words conveys a different shade of meaning but they all point to a situation where someone has been abandoned or left in a difficult spot with no help or resources. Whether it's being stranded on a desert island or being betrayed by someone you trusted, the feeling of being left high and dry is something that we can all relate to at some point in our lives.