INADVERTENT

accidental, inadvertent

(adjective) happening by chance or unexpectedly or unintentionally; “with an inadvertent gesture she swept the vase off the table”; “accidental poisoning”; “an accidental shooting”

Source: WordNet® 3.1

Etymology

Adjective

inadvertent (not comparable)

Not intentional; not on purpose; not conscious.

(obsolete) Inattentive.

Synonyms

• (not intentional): designless, unintended, accidental; see also unintentional

• (inattentive): absent-minded, distracted

Source: Wiktionary

In`ad*vert"ent, a. Etym: [Cf. F. inadvertant. See 2d In-, and Advert.]

Definition: Not turning the mind to a matter; heedless; careless; negligent; inattentive. An inadvertent step may crush the snail That crawls at evening in the public path. Cowper.

– In`ad*vert"ent*ly, adv.

Source: Webster’s Unabridged Dictionary 1913 Edition