Synonyms for Illuminate (same or very similar meaning)
WordNet sense 1 (make free from confusion or ambiguity; make clear):
clear, crystallize, elucidate, enlighten, crystalise, crystalize, crystallise, clear up, straighten out, shed light on, sort out
WordNet sense 2 (make lighter or brighter):
illumine, light, illume, light up
From the ODE community, based on WordNet
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