obstructionist

obstruction +‎ -ist

• (UK) IPA^(key): /əbˈstɹʌk.ʃənˌɪst/

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obstructionist (plural obstructionists)

1. Someone who systematically obstructs the actions of others.
   • 1913, Arthur Conan Doyle, “(please specify the page)”, in The Poison Belt […], London; New York, N.Y.: Hodder and Stoughton, →OCLC:

     "And you, sir, have lived an unimaginative obstructionist and never can hope now to emerge from it."

   • 2020 June 23, John Bolton, The Room Where It Happened: A White House Memoir, New York, N.Y.: Simon & Schuster, →ISBN, page 395:

     The obstructionists didn't have their own plan, but they counted, successfully, on delay to frustrate any alternative.

   1. Someone who attempts to impede the progress of legislation.

obstructionist (comparative more obstructionist, superlative most obstructionist)

1. Pertaining to obstructionism.
2. Obstructionistic.