grey (n.)
- acier
- aged
- ancient
- bay
- bayard
- black
- boring
- buckskin
- chestnut
- dapple
- dapple-gray
- dappled-gray
- dark
- dead
- dim
- drab
- drabness
- dullness
- dun
- elderly
- faint
- fallow
- flat
- glaucous
- grave
- gray
- grayness
- grim
- grizzle
- grizzly
- haggard
- hoar
- humdrum
- iron-gray
- lividity
- lividness
- lurid
- mat
- mature
- neutral
- old
- overcast
- paint
- pale
- pasty
- pearl
- pearly
- pinto
- roan
- sad
- sallow
- same
- silver
- soberness
- somberness
- sorrel
- taupe
- wan
- waxen
- weak
- white
- wise
grey (v.)
grey (adj.)
- achromatic
- achromic
- advanced
- aged
- ancient
- anemic
- ashen
- ashy
- bay
- black
- bleak
- bloodless
- boring
- cadaverous
- canescent
- cheerless
- chestnut
- cloudy
- colorless
- dappled
- dark
- dead
- depressing
- dim
- dimmed
- dingy
- dismal
- drab
- drear
- dreary
- dull
- dun
- dusty
- elderly
- etiolated
- experienced
- exsanguine
- faded
- faint
- fallow
- flat
- foggy
- funereal
- ghastly
- glaucous
- gloomy
- glum
- grave
- gray
- gray-black
- gray-brown
- gray-green
- gray-haired
- gray-headed
- gray-white
- grayish
- grim
- grizzled
- grizzly
- haggard
- hoar
- hoary
- hueless
- humdrum
- iron-gray
- lackluster
- leaden
- livid
- lurid
- lusterless
- mat
- mature
- mealy
- misty
- monotonous
- mouse-colored
- mousy
- muddy
- murky
- neutral
- old
- overcast
- pale
- pale-faced
- pallid
- pasty
- patriarchal
- pearly
- piebald
- repetitive
- roan
- sad
- sallow
- same
- saturnine
- sickly
- silver
- silver-gray
- silvery
- slaty
- smoky
- sober
- solemn
- somber
- sooty
- sorrel
- steely
- sunless
- taupe
- tedious
- toneless
- uncolored
- unrelieved
- venerable
- wan
- washed-out
- waxen
- weak
- wearisome
- weary
- white
- white-haired
- wise
- wrinkled
- wrinkly
The grey mare is the better horse.