This word is acceptable for play in the US & UK dictionaries that are being used in the following games:

• Lexulous
• Wordscraper
• Wordosaur

v. Present participle of drain.

adj. That drains

n. the practice of exploring drains, tunnels, or sewers

v. The art of carrying off surplus water, as from land.

n. The drawing or running off of water, especially the artificial removal of water from land by surface or under-ground channels; drainage.

adj. having a debilitating effect

"With short-term draining operations and long-term water-management projects under way, "we have high confidence that this will not repeat," Deputy Prime Minister Kittiratt Na-Ranong said in an interview at the Asia-Pacific Economic Cooperation summit here."

debilitating   

drain   

abstaining    ascertaining    attaining    campaigning    caning