ob·nu·bi·late \äbˈn(y)übəˌlāt, əbˈ-\transitive verb (-ed/-ing/-s) Etymology: Latin obnubilatus, past participle of obnubilare to cover with clouds, from ob- to, over + nubilus cloudy, from nubes cloud — more at ob-, nuance 1.: to cover or obscure by or as if by clouds : becloud < vision obnubilated by fatigue > 2. a.: to make cloudy of mind < obnubilated by scholastic philosophy > b.: to induce torpor in < obnubilate with drugs > Synonyms:see obscure