SYN: Reek, fume, steam.
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KEY: Smooth \a.\
SYN: Even, plain, level, flat, polished, glossy, sleek, soft, unruffled, unobstructed, bland, oily, suave.
ANT: Uneven, rough, rugged, abrupt, precipitous, unpolished, harsh, blunt.
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KEY: Smooth \v.\
SYN: Flatten, level, ease, soften, calm, allay, mitigate, [See CALM].
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KEY: Smolder.