washed-out

1. Lacking color or intensity; faded.
2. Exhausted or tired-looking.
3. Having dropped a project or an enterprise or having been dropped from one: a washed-out officer candidate.

Faded in color; also, lacking animation. For example, This carpet is all washed out from the sun, or He looks all washed out. [Late 1700s; early 1800s] Also see wash out, def. 3.

The adjective has 2 meanings:

Meaning #1: drained of energy or effectiveness; extremely tired; completely exhausted
  Synonyms: exhausted, dog-tired, fagged, fatigued, played out, spent, worn-out, worn out

Meaning #2: having lost freshness or brilliance of color
  Synonyms: bleached, faded, washy