MEANING: verb tr.: To make dark, less clear, or gloomy.

ETYMOLOGY: From en- (to cause to) + dark, from Old English deorc (dark). Earliest documented use: 1569. Its counterpart, implying to bring light or clarity, is enlighten.

END ARLEN - destroy the career of the composer of Over the Rainbow

ENDiRKEN - to equip with a short Scottish dagger

ENDEAR KEN - make Barbie's friend better-liked