bois·ter·ous (boistər-əs, -strəs)
1. Loud or noisy and lively or unrestrained: a boisterous street market. See Synonyms at vociferous.
2. Rough and stormy; violent: boisterous winds; a boisterous voyage.
[Middle English boistres, variant of boistous, rude, rough, perhaps from Old French boisteus, lame, limping, from boiste, knee joint.]
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Indo-European & Semitic Roots Appendices
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