obstructor 1
noundomain: person
Princeton WordNet [ver.3.1]
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EnglishDefinition
someone who systematically obstructs some action that others want to take
Hypernym
disputant 1
noun
a person who disputes; who is good at or enjoys controversy
EnglishDerivationally related form
obstruct 1
verb
hinder or prevent the progress or accomplishment of
Hyponym
naysayer 1
noun
someone with an aggressively negative attitude
stonewaller 1
noun
one who stonewalls or refuses to answer or cooperate; someone who delays by lengthy speeches etc.
