All catalyst antonyms
cat·a·lyst
C c noun catalyst
- hindrance — an impeding, stopping, preventing, or the like.
- blockage — A blockage in a pipe, tube, or tunnel is an object which blocks it, or the state of being blocked.
- prevention — the act of preventing; effectual hindrance.
- block — A block of flats or offices is a large building containing them.
- preventer — a person or thing that prevents.
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