1) Accident 2) An accident messed up his map 3) An instance of misfortune 4) Bad break 5) Bad luck 6) Ball hit into the water 7) Bit of bad luck 8) Boo-boo 9) Calamity 10) Catastrophe 11) Chance 12) Collision 13) Disaster 14) Fall 15) Fender bender 16) Fender dent 17) Fortune 18) Hazard 19) Industrial accident Found on https://www.crosswordclues.com/clue/mishap
Mis·hap' intransitive verb To happen unluckily; -- used impersonally. [ Obsolete] 'If that me mishap .' Chaucer. Found on http://www.encyclo.co.uk/webster/M/77