'Inadvertency' definitions:

Definition of 'inadvertency'

noun

The trait of forgetting or ignoring your responsibilities [syn: unmindfulness, heedlessness, inadvertence, inadvertency] [ant: heedfulness, mindfulness]

From: GCIDE

Inadvertence \In`ad*vert"ence\; pl. -ces, Inadvertency \In`ad*vert"en*cy\; pl. -cies, n. [Cf. F. inadvertance.] [1913 Webster]
1. The quality of being inadvertent; lack of heedfulness or attentiveness; inattention; negligence; as, many mistakes proceed from inadvertence. [1913 Webster]
Inadvertency, or lack of attendance to the sense and intention of our prayers. --Jer. Taylor. [1913 Webster]
2. An effect of inattention; a result of carelessness; an oversight, mistake, or fault from negligence. [1913 Webster]
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. [1913 Webster]