Akademik

muffled
adjective
1. being or made softer or less loud or clear (Freq. 7)
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the dull boom of distant breaking waves

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muffled drums

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the muffled noises of the street

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muted trumpets

Syn: ↑dull, ↑muted, ↑softened
Similar to: ↑soft
2. wrapped up especially for protection or secrecy (Freq. 1)
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children muffled almost to the eyebrows

Similar to: ↑covered

Useful english dictionary. 2012.