- obstructionist, obstructor, obstructer, resister, thwarter - someone who systematically obstructs some action that others want to take
--1 is a kind of disputant, controversialist, eristic
--1 has particulars: naysayer; stonewallerDerived form: verb obstruct1 - obstruction, obstructor, obstructer, impediment, impedimenta - any structure that makes progress difficult
--2 is a kind of structure, construction
--2 has particulars:bar; barrier; blockade; blockage, block, closure, occlusion, stop, stoppage; hindrance, hitch, preventive, preventative, encumbrance, incumbrance, interference; obstacle; tumbler Derived form: verb obstruct2