D.O.A. is an acronym that stands for "dead on arrival." It is typically used to describe something that is beyond repair, or a situation that is hopeless. There are many different synonyms for this term, including "beyond redemption," "lifeless," "defunct," "dead-in-the-water," "useless," and "finished." Each of these words conveys a similar sense of finality and hopelessness, and can be used interchangeably depending on the context of the situation. Regardless of which synonym is used, however, the message is clear: something that is d.o.a. is no longer functional or viable, and must be discarded or replaced.