The phrase "biting the bullet" has a strong connotation of enduring a difficult or unpleasant situation with courage and fortitude. Antonyms for this phrase might include conceding defeat, deriving pleasure, avoiding conflict, or seeking an easy way out. Other possible opposite expressions might include "throwing in the towel," "giving up the fight," or "walking away from the challenge." Overall, antonyms for "biting the bullet" would suggest a lack of resilience or bravery in the face of adversity, or a preference for comfort and ease over working hard or persevering.