vitiated, reduced, bleached, washed-out, washy, hurt, weakened, lessened, faded, attenuate, decreased, diminished.
depressed (part of speech: verb)
diluted (part of speech: verb)
They never liked him, never trusted him; whenever he had an unpleasant communication to make, he exaggerated the unpleasantness, never attenuated,
and there is so much in the way things are said.
- "My First Years As A Frenchwoman, 1876-1879", Mary King Waddington.
There stood the attenuated
form of poor old Blackbird, looking huge and almost spectral in the dim light, but proclaiming its identity by a low whinny.
- "North, South and Over the Sea", M.E. Francis (Mrs. Francis Blundell).
air gave no firm support to the wings, and the least tilt developed into side- slip, while she seemed sluggish on her controls.
- "Danger! and Other Stories", Arthur Conan Doyle.