Definition of "unwariness" [un•wa•ri•ness]

• The property of being unwary. (noun)

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• "Astonished that he had not noticed this before, and shocked at the unwariness by which he might have betrayed her into so dangerous a situation, he became at once reconciled to the idea of leaving her in a convent."
• "This unwariness makes the egg-switching a little easier."
• "This, as I had learnt many years previously from a colleague who'd just had a bullet extracted from the lobe of his left lung because of this very unwariness, was a very unwise thing to do."