French

Verb

hérisser

1. (of an animal) to bristle, ruffle (feathers, fur etc.)
   • 1856, Gustave Flaubert, Madame Bovary:

     La pluie ne tombait plus; le jour commençait à venir, et, sur les branches des pommiers sans feuilles, des oiseaux se tenaient immobiles, hérissant leurs petites plumes au vent froid du matin. (The rain was no longer falling; the day was starting to dawn, and, on the leafless branches of the apple-trees, the birds were still, ruffling their small feathers in the cold morning wind.)

2. to spike; to form spikes in
3. (colloquial) to get somebody's back up

Conjugation