The phrase "haddest qualms" stands for feeling uneasy and hesitant about something. Its antonyms are words that denote the opposite meaning or emotion. Some antonyms for "haddest qualms" are confidence, assurance, certainty, resoluteness, firmness, and decisiveness. If one does not experience "haddest qualms," they may feel assured, certain, and confident in their decisions. Alternatively, if one is resolute or firm, they make decisions without hesitation or ambiguity. Therefore, to avoid feeling anxious or uncertain, one can cultivate feelings of confidence, assurance, and decision-making.