The term "lucking out" typically means to have a stroke of good luck or fortune. Antonyms for this phrase would be words or phrases that convey the opposite meaning, such as unlucky, unfortunate, unfavorable, or ill-fated. Alternatively, some antonyms could be related to one's own efforts, such as working hard, striving, or putting in effort. In essence, antonyms for "lucking out" can be any phrase or word that suggests a lack of good fortune or success, whether it be due to outside factors or one's own actions.