Why “brath” is a great word
BRATH — [Adjective] Characterized by haste, violence, or fierceness. From Middle English brath, from Old Norse bráðr ("hasty, sudden"), from Proto-Germanic *brēþaz ("hot, rushed"), ultimately from Proto-Indo-European *bʰer- ("to seethe, boil"). The earliest known use in English is from around 1175. Unlike impetuous, which suggests a rash impulse, or vehement, which implies forceful feeling, brath describes an inherent and volatile condition—a nature both rushed and ruinous. It is the lashing squall that shreds a sail, the berserker's unstoppable charge, and the crack of green wood giving way all at once: a word for the swift and terrible momentum of things that cannot be called back.
Etymology
From Middle English brath, broth, braith, from Old Norse bráðr (“hasty, sudden”), from Proto-Germanic *brēþaz (“hot, in a hurry, rushed”), from Proto-Indo-European *bʰrē-, *bʰerē- (“steam, vapour”), from *bʰer- (“to seethe, toss about, cook”). Cognate with Icelandic bráður (“quick, hasty, excited”), Swedish bråd (“hasty, sudden, urgent”), Danish bråd (“hasty, sudden”). Related to breath, brew.