The phrase "nothing doing" is often used to express disinterest or unwillingness. Its antonyms, on the other hand, convey positivity and enthusiasm. Some examples of antonyms for "nothing doing" are the phrases "count me in," "all in," "I'm game," or "let's do it." These phrases imply a willingness to participate and engage, as opposed to the disinterest of "nothing doing." Other antonyms for this phrase include "sure thing," "absolutely," "certainly," or "let's get to it." These phrases suggest a can-do attitude and a willingness to take action, making them the perfect opposite of "nothing doing.