Definitions

1. verb

to lose or become lessened in color, especially to become less brown.

“The old wooden deck unbrown over time due to exposure to the elements.”

2. verb

to reduce or remove the brown color from something.

“The bleach unbrown the yellowed fabric.”

3. noun

the process of losing or becoming lessened in color, especially becoming less brown.

“The unbrown of the wood was accelerated by the intense sunlight.”

4. noun

a state or condition of becoming less brown in color.

“The unbrown of the leather was a sign of its age.”