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Pronunciation varies by accent · noun
An underground drain or trench with openings through which the water may percolate from the soil or ground above..
Use underdrain when its meaning, tone and grammar fit the full sentence. A synonym is not always a direct replacement.
Underdrain means An underground drain or trench with openings through which the water may percolate from the soil or ground above..
Common synonyms include underdrainer.
The opposite depends on the specific sense.
Use underdrain where its definition matches the intended context.
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