(possessional) Having had an accident / That has an uneven or undulating surface

(grammar) The accidents or inflections of words; the rudiments of grammar. / The rudiments of any subject.

An unexpected event with negative consequences occurring without the intention of the one suffering the consequences, and (in the strict sense) not directly caused by humans.

(now nonstandard) Accidentally; by chance, unintentionally.

plural of accident

Accidentally; unintentionally; without meaning to; as the result of an event not expected, aided, or willingly planned.

Accidental; as the result of some unforeseen happening or series of events; unexpected; resulting from an event without the foresight, expectation, aid, or design of the person by whose agency it was caused; unintentional.

Accidentally; not intentionally; because of error, misfortune, or lack of caution.

plural of accidence

A town in Maryland, United States.