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

• Lexulous
• Wordscraper
• Wordosaur

adj. superlative form of dusky: most dusky.

"When Morris at last arrived, they sat together for half an hour in the duskiest corner of a back shop; and it is hardly too much to say that this was the happiest half-hour that Mrs. Penniman had known for years."