IPA: /əbˈstrʌkʃənɪst/
KK: /əbˈstrʌkʃənɪst/
A person who deliberately prevents or delays progress, especially in politics, by using tactics to block decisions or actions.
The obstructionist in the committee used various tactics to delay the vote on the new law.
Obstructionist → It is formed from "obstruct" (from Latin "obstruere", meaning to block or hinder) and the suffix "-ion" (indicating an action or condition) combined with "-ist" (meaning a person who practices or is concerned with something). The word "obstructionist" refers to a person who deliberately blocks or hinders progress or action.
Think of someone who is 'blocking' ('obstruct') progress and is therefore an 'ist' — a person who practices obstruction.