inconsiderate

Inconsideration and vanity have been the joint cause of your malady.

She simply added to the sin of untruthfulness, the sins of ingratitude, and of inconsideration for the feelings of another.

This inconsideration, though she seldom complained, affected her spirits and preyed upon her heart.

And I find all just, all right, on your side; and all impatience, all inconsideration on mine.