obstructionist Meaning, Definition & Usage

  1. noun someone who systematically obstructs some action that others want to take
    resister; thwarter; obstructor; obstructer.

WordNet

Ob*struc"tion*ist noun
Definitions
  1. One who hinders progress; one who obstructs business, as in a legislative body. -- a. Of or pertaining to obstructionists. Recent

Webster 1913