Had a go at can be defined as an attempt to do something. There are many antonyms for this phrase, including refrain from, give up, abandon, neglect, and ignore. These antonyms indicate a lack of effort or action taken towards a task or objective. They suggest the opposite of having a go at, which is to not even try. While had a go at implies a certain amount of determination or will to succeed, these antonyms imply a lack of motivation or interest in achieving a goal. Instead of giving up, it may be better to keep trying and keep having a go at it until success is achieved.