As the world waits for a Italian jury to decide who killed British student Meredith Kercher in November 2007, a reporter today made reference to the young woman's "grizzly murder." Strange theories abound in the sad case, but this is the first time I've heard anyone offer that the perpetrator was a large bear belonging to a species native to North America.
Although grisly (the word that, of course, should have been used) sounds the same as grizzly, the words have very different meanings and origins. Grisly comes from a Germanic word meaning "to fear." We now use it to mean gruesome, horrible, repulsive. Grizzly, on the other hand, comes from the French word gris for "gray." It's essentially the same word as grizzled, which means "graying" or "sprinkled with gray," usually in reference to hair or fur.
So that's easy, right? Well, not so fast. Merriam-Webster Unabridged insists that grizzly was once an acceptable way to spell grisly, and it's therefore not wrong to talk about a grizzly murder, even if no carnivorous mammal was involved. Wikipedia seems to back that up when it says that grizzly bears weren't named for their occasional speckles of silver fur but because a naturalist actually meant grisly when he bestowed that adjective on the fearsome species. This is echoed in the bear's subspecies name horribilis (full name Ursus arctos horribilis). Apparently, grizzly as a synonym for "graying" never quite caught on, and it's not perfectly clear that its use as an alternate form of grisly is erroneous.
As Winnie-the-Pooh would say, "Oh Bother." It's a lot more fun catching big fat goofs when you don't have to worry that they might actually be acceptable usages.
But I wouldn't worry too much about this one. Regardless of whether grizzly actually means grizzled or gruesome, it clearly refers to a type of bear. And we can safely classify grizzly in the species Errare grammatica stupida when a writer uses it where grisly was obviously called for.