Added 9 October 2026 obstructionist /əbˈstɹʌk.ʃənˌɪst/ noun Categories: PeopleRare Words noun ! Definition from WordNet 3.1, Princeton University. Pronunciation from Wiktionary, via Kaikki.org. More about obstructionist at Wordnik → Where our words come from → Someone who systematically obstructs some action that others want to take. Related Words: obstructionobstructiveblockagefoulingfilibusterfilibusteringblockobjectionistopponentobjectoroppressoroppositionist Back to today's word