"Goner" is a slang term used to describe someone who is in a hopeless situation or past the point of recovery. Some synonyms for "goner" include "doomed," "finished," "ruined," "unsalvageable," and "washed-up." Other similar words might include "irreparable," "irredeemable," "exhausted," and "spent." Depending on the context, different synonyms may be more appropriate than others. For example, someone who has just lost their job might be described as "down on their luck" or "struggling," whereas someone with a terminal illness might be seen as "terminal" or "terminally ill." Ultimately, the choice of synonym depends on the specific situation and the writer's intention.