Antonyms for "sticking it out" can include "giving up," "quitting," "abandoning," "surrendering," and "throwing in the towel." These terms suggest a lack of perseverance or determination in the face of obstacles or difficulty. While "sticking it out" may require endurance, resilience, and the willingness to weather challenges and hardships, its antonyms connote a defeatist attitude or a lack of faith in one's abilities. By contrast, antonyms for "sticking it out" can be replaced by words such as "persevering," "enduring," "persisting," "overcoming," or "succeeding," which convey a sense of resilience, grit, and tenacity in the face of adversity.