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KEY: Obstreperous.
SYN: Noisy, uproarious, clamorous, rattling.
ANT: Subdued, quiet, noiseless, inobstreperous.
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KEY: Obstruct.
SYN: Bar, block, choke, hinder, impede, interrupt, retard, clog.
ANT: Open, clear, pave, facilitate, expedite, further, advance, promote, accelerate, aid.
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KEY: Obstruction.