The phrase "haddest shot at" implies that someone attempted something and possibly failed. Antonyms for this phrase could include "succeeded," "accomplished," or "nailed it." These words suggest that someone not only attempted something but also achieved their goal. Other antonyms could include "avoided," "abstained," or "refrained." These words signify a conscious decision not to attempt something. Alternatively, antonyms to "haddest shot at" could also include "never tried," "did not attempt," or "avoided altogether." These words indicate a complete lack of effort, instead of a failed attempt.