obstructiveEnglishOxford Dictionary of Englishobstructive /əbˈstrʌktɪv / ▸ adjective 1 causing a blockage or obstruction: all tubing should be cleared of obstructive algae and detritus. ▪ relating to obstruction of a passage in the body, especially the gut or the bronchi: the child developed severe obstructive symptoms. 2 causing or tending to cause deliberate difficulties and delays: he denied the council had been obstructive. – DERIVATIVES obstructively /əbˈstrʌktɪvli / adverb obstructiveness /əbˈstrʌktɪvnɪs / noun