"Go at" is a phrase that refers to the act of doing something with enthusiasm or intensity. Synonyms for this expression include "attack," "tackle," "embark upon," "begin," "undertake," and "launch into." These words convey a sense of energy and determination, emphasizing the idea that the speaker is ready to take on a challenge or task with full force. Other related terms might include "dive in," "throw oneself into," or "plunge into," which all similarly suggest a commitment to putting forth one's full effort. Overall, these synonyms help to convey the spirit of action and engagement inherent in the phrase "go at".