"A corps perdu" is a French phrase that can be translated to "headlong" or "recklessly." There are many synonyms for this phrase, including "impetuously," "frantically," "hastily," "madly," and "wildly." Each of these words describes a sense of urgency or abandon, suggesting that someone is acting without much thought or consideration for the consequences. Other synonyms for "a corps perdu" might include "thoughtlessly," "carelessly," or "rashly," but each of these words suggests a slightly different shade of meaning. Ultimately, the term "a corps perdu" captures a sense of desperate urgency that is difficult to describe in a single word.