The phrase "came away with" typically implies that someone gained or acquired something. Its antonyms, on the other hand, suggest a lack of gain or loss. "Lost," "dispossessed," and "emptied" are a few options. "Failed to obtain," "left without," and "came up empty-handed" are also good choices. Synonyms such as "departed," "left," and "moved on" can be used in context. However, using antonyms for "came away with" can create a more negative tone or suggest a missed opportunity. Nevertheless, it's essential to have a broad vocabulary to express oneself accurately and with precision in writing and communication.