An archaic or poetic form of 'cursed'; under a curse, damned, or extremely unlucky or wicked.
From Old English and Middle English 'cursed,' originally from the verb 'curse' (to invoke evil upon), with an archaic past participle form.
Shakespeare loved using 'curst' in his plays—it sounds more dramatic and Shakespearean than modern 'cursed,' which is probably why fantasy authors still use it!
Complete word intelligence in one call. Free tier — 50 lookups/day.