Webster’s Revised Unabridged Dictionary · 1913
Blur
Blur (blûr), v. t. [imp. & p. p. Blurred (blûrd); p. pr. & vb. n. Blurring.] [Prob. of same origin as blear. See Blear.] 1. To render obscure by making the form or outline of confused and uncertain, as by soiling; to smear; to make indistinct and confused; as, to blur manuscript by handling it while damp; to blur the impression of a woodcut by an excess of ink.
But time hath nothing blurred those lines of favor Which then he wore. Shak.
2. To cause imperfection of vision in; to dim; to darken.
Her eyes are blurred with the lightning's glare. J. R. Drake.
3. To sully; to stain; to blemish, as reputation.
Sarcasms may eclipse thine own, But can not blur my lost renown. Hudibras.
Syn. — To spot; blot; disfigure; stain; sully.
Blur (blûr), n. 1. That which obscures without effacing; a stain; a blot, as upon paper or other substance.
As for those who cleanse blurs with blotted fingers, they make it worse. Fuller.
2. A dim, confused appearance; indistinctness of vision; as, to see things with a blur; it was all blur.
3. A moral stain or blot.
Lest she . . . will with her railing set a great blur on mine honesty and good name. Udall.