Crossword clues for the word: DARKENS The word DARKENS has appeared as an answer to at least 10 crossword clues on different crossword puzzles. Crossword clues for DARKENS Showing 1 to 10 of 10 results Clue(s) "Reacts to sunlight, as transition lenses" Adds shadows Becomes blacker Dims Grows dimmer Obscures Obumbrates Studies about old ship and clouds What a photochromic lens does in daylight What the moon does during a lunar eclipse