Feeling embarrassed or foolish are common synonyms for the phrase "feeling like a jackass". Other alternatives include feeling awkward, self-conscious, or absurd. When someone experiences regret or remorse for their actions, they might say that they feel silly or stupid. Alternatively, if someone is ashamed of their behavior, they may describe feeling humiliated or mortified. Whatever the circumstance, there are many ways to express the sentiment of feeling like a jackass without explicitly using the term. It's essential to recognize and acknowledge these emotions to learn from mistakes and prevent similar situations from happening in the future.