Origin: 1350–1400; Middle English Related forms
< Medieval Latin accidentālis.
accidentally, accidently, adverb
accidentalness, accidentality, noun
nonaccidental, adjective, noun
1. unintentional, unforeseen. Accidental, casual, fortuitous all describe something outside the usual course of events. Accidental implies occurring unexpectedly or by chance: an accidental blow. Casual describes a passing event of slight importance: a casual reference. Fortuitous is applied to events occurring without known cause, often of a fortunate or favorable nature: a fortuitous shower of meteors. It often also implies good luck or good fortune: a fortuitous choice leading to rapid advancement.
1. planned, contrived.