Ursus arctos horribilis Ursus arctos horribilis antonyms If you know antonyms for Ursus arctos horribilis, then you can share it. Suggest antonym for Ursus arctos horribilis Ursus arctos horribilis synonyms grizzly grizzly bear silver-tip silvertip Ursus horribilis Ursus arctos brown bear bruin