different between unwinking vs unwincing

English

Etymology

un- +? winking

Adjective

unwinking (not comparable)

1. Not winking.
   • 1954, C. S. Lewis, The Horse and His Boy, Collins, 1998, Chapter 6,

     […] what was now lying at his feet, and staring him out of countenance with its big, green, unwinking eyes, was the cat […]

2. (by extension) Constantly on one's guard; vigilant.
   • 1792, Vicesimus Knox, Sermons, chiefly intended to promote Faith, Hope, and Charity

     All your anxious care, all your unwinking vigilance, is necessary to preserve you from your great adversary.

English

Etymology

un- +? wincing

Adjective

unwincing (not comparable)

1. (chiefly figuratively) Not wincing, showing no sign of pain or discomfort.
   • 1855, Elizabeth Gaskell, North and South, Chapter 41,^[1]

     So she sat almost motionless for hours in the drawing-room, going over the bitterness of every remembrance with an unwincing resolution.

   • 1932, Barrett Willoughby, Spawn of the North, New York: Grosset & Dunlap, Chapter 8, 1,^[2]

     There the man sat, straight as a totem pole and as unwincing, while rain-squalls belabored his bare head and sweatered body.

Derived terms

• unwincingly