Etymology

boast

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Today it means: A brag; ostentatious positive appraisal of oneself. Full definition →

Middle English bosten ← North Germanic ← Proto-Germanic *bausuz
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The story

  1. Proto-Germanic · derived from*bausuz“inflated, swollen, puffed up, proud, arrogant, bad”
  2. North Germanic · derived from
  3. Middle English · inherited frombosten
  4. English todayboast

From Middle English bosten, from bost (“boast, glory, noise, arrogance, presumption, pride, vanity”), probably of North Germanic origin, ultimately from Proto-Germanic *bausuz (“inflated, swollen, puffed up, proud, arrogant, bad”). Cognate with Scots bost, boist (“to threaten, brag, boast”), Anglo-Norman bost (“ostentation”) (from Germanic). Related to Norwegian baus (“proud, bold, daring”), dialectal German baustern (“to swell”), German böse (“evil, bad, angry”), Dutch boos (“evil, wicked, angry”), West Frisian boas (“bad, wicked, angry, shrewd, clever”). Compare also dialectal Norwegian bausta, busta (“to rush onward, make a noise”). Possible doublet of boost. Compare typologically puffy, Russian напы́щенный (napýščennyj), наду́тый (nadútyj).

Words from the same roots

Proto-Germanic*bausuz all →

Boswell

Etymology from Wiktionary, CC BY-SA 4.0.