arctic (adj.)

"large carnivorous or omnivorous mammal of the family Ursidae," Old English bera "a bear," from Proto-Germanic *bero, literally "the brown (one)" (source also of Old Norse björn, Middle Dutch bere, Dutch beer, Old High German bero, German Bär), usually said to be from PIE root *bher- (2) "bright; brown." There was perhaps a PIE *bheros "dark animal" (compare beaver (n.1) and Greek phrynos "toad," literally "the brown animal").

Greek arktos and Latin ursus retain the PIE root word for "bear" (*rtko; see arctic), but it is believed to have been ritually replaced in the northern branches because of hunters' taboo on names of wild animals (compare the Irish equivalent "the good calf," Welsh "honey-pig," Lithuanian "the licker," Russian medved "honey-eater"). Others connect the Germanic word with Latin ferus "wild," as if it meant "the wild animal (par excellence) of the northern woods."

Used of rude, gruff, uncouth men since 1570s. Symbolic of Russia since 1794.  The stock market meaning "speculator for a fall" is by 1709, a shortening of bearskin jobber (from the proverb sell the bearskin before one has caught the bear); i.e. "one who sells stock for future delivery, expecting that meanwhile prices will fall." Paired with bull from c. 1720. Bear claw as a type of large pastry is from 1942, originally chiefly western U.S. Bear-garden (1590s) was a place where bears were kept for the amusement of spectators.

late 14c., antartyk "opposite to the north pole" (adj.), from Old French antartique, from Medieval Latin antarcticus, from Greek antarktikos "opposite the north," from anti- "opposite" (see anti-) + arktikos "arctic" (see arctic).

The first -c- ceased to be pronounced in Medieval Latin and was dropped in Old French. Modern English restores it in spelling from 17c. Also from late 14c. as a noun (with capital A-), "region around the South pole of the sky or the southern regions of the Earth."