OpprinnelseFrom Old West Norse brattr, from Proto-Germanic *brantaz, from Proto-Indo-European *dʰewsóm., of uncertain origin, but possibly from Proto-Indo-European *bʰren- (“project”), related to Old English brant (“steep”), Latvian bruôds (“roof ridge”).
Cognate with Faroese and Icelandic brattur, Danish brat, Swedish brant, and Old English brant, bront (English brant, brent, Scots brent).
Bøyningerbratt(neuter, singular) · bratte(definite, plural, singular) · brattere(comparative) · brattest(indefinite, superlative) · bratteste(definite, superlative)
Kilde: Wiktionary