Antonyms for Light (opposite meaning)
WordNet sense 1 (absence of light or illumination):
dark
WordNet sense 2 (put out, as of fires, flames, or lights):
extinguish, quench
WordNet sense 3 (of the military or industry; using (or being) the heaviest and most powerful armaments or weapons or equipment):
heavy
From the ODE community, based on WordNet
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