The phrase "haddest a try" indicates that someone attempted to do something. Antonyms for this phrase could include "did not try," "refrained," "avoided," or "neglected." These words suggest a lack of effort, interest, or motivation to attempt something. On the other hand, antonyms for "haddest a try" could also include "succeeded," "accomplished," or "achieved." These words indicate that someone was able to successfully complete a task or reach a goal without having to try multiple times. Overall, the antonyms for "haddest a try" depend on the context and the intent behind the attempt.