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circumventverb [ T ] uk â /ËsÉË.kÉmËvent/ us â /ËsÉË.kÉmËvent/ formal. âº to avoid something, especially cleverly or illegally: Ships were registered abroad to circumvent employment and safety regulations. Thesaurus: synonyms and related words.
Definition of circumstantial. 1  1 : belonging to, consisting in, or dependent on circumstances a circumstantial case circumstantial factors circumstantial evidence. 2  2 : pertinent but not essential : incidental Revolutions usually happen for both structural and circumstantial reasons. â A. M. S. Aly.