Antonyms for the phrase "coming away with" could include "losing," "failing," and "struggling." When someone "comes away with" something, it usually implies success or victory, so the opposite would be a lack of achievement or disappointment. Another antonym for this phrase could be "letting go," signifying a conscious decision to release one's hold on something, rather than actively pursuing and obtaining it. Ultimately, the antonyms for "coming away with" all suggest a lack of success, either through defeat or a relinquishing of control.