FOG UP Antonyms2 antonyms for fog up. (opposite meanings)Definition of FOG UP Best Opposite Words For FOG UPTop 20Top 10 Top 20 (Default)Top 50 Top 100 All All (Default)WordsPhrases All All (Default)Verb Noun Adjective Adverb WordSaveSyns..UsageTypeuncloudverb, nounv, n No meanings yet for this word... clear upverbvverb • make clear and (more) comprehensible • finish a task completely • free (the throat) by making a rasping sound • become clear • make free from confusion or ambiguity; make clear Alternatives for UNCLOUD Words (6)brightenclarifycleanseclearilluminatepurifyOpposite words for uncloud