See Synonyms at blast. verb, intransitive To suffer blight.Origin of blight Origin unknown. blight Noun (countable and uncountable, plural blights)any of many plant diseases causing damage to, or the death of, leaves, fruit or other partsthe bacterium, virus or fungus that causes such a condition(by extension) anything that impedes growth or development or spoils any other aspect of lifeVerb (thir