¹accidental

accidental, fortuitous, casual, contingent mean not amenable to planning or prediction. accidental stresses chance <any resemblance to actual persons is entirely accidental>. fortuitous so strongly suggests chance that it often connotes entire absence of cause <a series of fortuitous events>. casual stresses lack of real or apparent premeditation or intent <a casual encounter with a stranger>. contingent suggests possibility of happening but stresses uncertainty and dependence on other future events for existence or occurrence <the contingent effects of the proposed law>.