Does anyone know the difference between the words “grey” and “gray”? I just never bothered to investigate this one, so I’m hoping someone else knows the answer.
The letters a and e.
The Middle English word was græg. Several world that ended -æg are now spelled -ey, but the only other common word that has survived is “clay.”
The OED has an entire paragraph devoted to the various authorities who prefer one over the other, and winds up saying both are equally acceptable (at least in Britain in 1919).
Tom~
First smart-ass answer: The third letter’s different. 
Second s-a answer: “Gray” is the lightest shade, almost white. “Grey” is slightly darker. The next three shades are griy, groy, and gruy.
Real answer: “Gray” is the color. “Grey” is the last name (Joel Grey, Lady Jane Grey, Zane Grey, Jennifer Grey).
Here’s on online dictionary for ya.
www.onelook.com
Dopeler effect:
The tendency of stupid ideas to seem smarter when they come at you rapidly.
All right you clowns; quit spoon-feeding these people. Nice smart-ass remarks though.
Grey is the British spelling, gray is the American spelling.
“It says, I choo-choo-choose you. And it’s got a picture of a train.”
– Ralph Wiggum
John Gray (“author” of Men Are From Mars…) and the Crayola company would beg to differ.
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AHunter3: John Gray (“author” of Men Are From Mars…) and the Crayola company would beg to differ.
The author is actually colored gray. And the crayon grey was actually developed by a scientist by the name of Grey.
So there! :O)
Gray is the unit of absorbed dose of ionizing radiation, equal approximately to the absorbed dose delivered when the energy per unit mass imparted to matter by ionizing radiation is 1 joule per kilogram. Duh. The unit is named after… umm… some guy named Gray
Also:
English poet Thomas Gray
botanist Asa Gray
telephone inventor (almost) Elisha Gray
Little Orphan Annie cartoonist Harold Gray
British dramatist Simon Gray
first American circumnavigator Robert Gray
Supreme Court justice Horace Gray
Scottish prelate Gordon Joseph Cardinal Gray
Where’s Deceased Equine when you need him?
Back off, man. I’m a scientist.
That ol’ gray mare’s not what she used to be.
Livin’ on Tums, Vitamin E and Rogaine
The annoying thing is I know I’m going to be seeing this on a future list of “50 Weird Facts”.
I wish you people would stick to questions with nice black-and-white answers.
Ray (short of gray matter)
I agree that Gray is way more common a spelling for the name than Grey. As for the color, grey is preferred by Straight Dope Message Boarders, while gray is the spelling of choice for AOL-users and Strate Dope Message Borders.
Naah, that’s gry.
Oh, wait…
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*Mike King:
quote [AWB]:
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And the crayon grey was actually developed by a scientist by the name of Grey.
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The annoying thing is I know I’m going to be seeing this on a future list of “50 Weird Facts”.*
Um, Mike. My smiley face didn’t quite come out on that post. I was being facetious; I have no idea who invented gray crayons.
Grey is prettier.
“It is lucky for rulers that men do not think.” — Adolf Hitler
Only hounds are grey. Everything else is gray, especially when it’s smoggy.
Ray (and on Ash Wednesday)
Crayola was my first exposure to grey. It will be grey for me forever more.
And I’ve never seen the sheet music for The Old Grey Mare to spell it ‘gray.’
And what is Susan Dey been doing nowadays? After L.A. Law she went back into obscurity.
Peace.
She was in that sitcom for awhile, until she was replaced by Annie Potts. Supposedly Dey wasn’t funny enough but how funny do you have to be to act in a hack comedy? Her being fired broke my heart. 
According to http://us.imdb.com/Name?Dey,+Susan , she’s been averaging one made-for-tv movie per year since 1970. But the last one was in 1997.