The word "fail" means not to succeed in achieving something. However, there are many synonyms to express the same. Some of the synonyms to the word "fail" are fall short of expectations, come to grief, let down, be unsuccessful, flop, flunk, miss the mark, miscarry, lose, and defeat. Depending on the context and the tone, these synonyms can be used to replace the word "fail" and convey the same meaning. The use of synonyms adds variety to the content, and it also enhances the readability and the overall quality of the document.