Obstructionist

[əb'strʌkʃənɪst]

(noun.) someone who systematically obstructs some action that others want to take.

Typed by Claus--From WordNet

(n.) One who hinders progress; one who obstructs business, as in a legislative body.

(a.) Of or pertaining to obstructionists.

Editor: Sasha

Checked by Clive