"To no purpose" is a phrase that signifies the lack of a successful outcome despite the effort made. Synonyms for this phrase include "in vain," which means having no result or effect, "fruitless," which implies a lack of success despite effort, and "futile," which expresses a complete waste of time and energy. Other synonyms for "to no purpose" include "unproductive," which suggests a lack of positive results or achievements, and "useless," which implies the absence of any value or benefit. These synonyms all have a negative connotation and convey a sense of disappointment and frustration. When something is done "to no purpose," it is often necessary to reassess the approach and try a different strategy to achieve the desired outcome.