Etymology

roister

roist·er
R1O1I1S1T1E1R1

Today it means: To engage in noisy, drunken, or riotous behaviour. Full definition →

Old French rustre
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The story

  1. Old French · derived fromrustre
  2. English todayroister

From Old French rustre, from Latin rusticus. Doublet of rustic.

Etymology from Wiktionary, CC BY-SA 4.0.