Word.ws English Dictionary

underdrain

underdrain noun: an underground drain or trench with openings through which the water may percolate from the soil or ground above.

Noun

underdrain (plural underdrains)

  1. An underground drain or trench with openings through which the water may percolate from the soil or ground above.
    Synonyms:
    underdrainer

Verb

underdrain (third-person singular simple present underdrains, present participle underdraining, simple past and past participle underdrained)

  1. (transitive) To drain by forming an underdrain or underdrains in.

Synonyms of underdrain

Forms of underdrain

Noun
pluralunderdrains
Verb
third-person singular presentunderdrains
present participleunderdraining
past participleunderdrained
pastunderdrained

Origin of underdrain

From under- + drain.

Questions about underdrain

What does underdrain mean?
Underdrain means an underground drain or trench with openings through which the water may percolate from the soil or ground above.
What part of speech is underdrain?
Underdrain can be a noun or a verb.
What is the plural of underdrain?
The plural of underdrain is underdrains.

Words near underdrain in the dictionary

  1. Underdowns
  2. underdraft
  3. underdrafts
  4. underdrag
  5. underdrags
  6. underdrain
  7. underdrainage
  8. underdrained
  9. underdrainer
  10. underdrainers
  11. underdraining

Source and license

Adapted from Wiktionary: underdrain (page history and authors). Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws reformatted the entry and added links. Wiktionary data of 2026-09-02.

Last updated:

Pronunciation audio from Wikimedia Commons, each file under its own free license: LL-Q1860 (eng)-Flame, not lame-underdrain.wav.

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