mis ‧ chance /ˌmɪsˈtʃɑːns $ -ˈtʃæns/ BrE AmE noun [uncountable and countable] formal
bad luck, or a situation that results from bad luck SYN misfortune :
If by some mischance the government get elected again, I think taxes will rise.
mis ‧ chance /ˌmɪsˈtʃɑːns $ -ˈtʃæns/ BrE AmE noun [uncountable and countable] formal
bad luck, or a situation that results from bad luck SYN misfortune :
If by some mischance the government get elected again, I think taxes will rise.
Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012