INADVERTENCY

unmindfulness, heedlessness, inadvertence, inadvertency

(noun) the trait of forgetting or ignoring your responsibilities

Source: WordNet® 3.1

Noun

inadvertency (plural inadvertencies)

inadvertence or heedlessness

Source: Wiktionary

In`ad*vert"ence; pl. -ces (, In`ad*vert"en*cy; pl. -cies (, n. Etym: [Cf. F. inadvertance.]

1. The quality of being inadvertent; lack of heedfulness or attentiveness; inattention; negligence; as, many mistakes proceed from inadvertence. Inadvertency, or want of attendance to the sense and intention of our prayers. Jer. Taylor.

2. An effect of inattention; a result of carelessness; an oversight, mistake, or fault from negligence. The productions of a great genius, with many lapses an inadvertencies, are infinitely preferable to works of an inferior kind of author which are scrupulously exact. Addison.

Syn.

– Inattention; heedlessness; carelessness; negligence; thoughtlessness. See Inattention.

Source: Webster’s Unabridged Dictionary 1913 Edition