CATALYST Antonyms

There are 10 antonyms of the word catalyst. (opposite meanings)

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Definition of CATALYST

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catalyze catalytic


Expand?	Word	Save?	Synonyms..	Usage	Type
	block				verb, nounv, n
	noun • a solid piece of something (usually having flat rectangular sides) • a rectangular area in a city surrounded by streets and usually containing several buildings • a three-dimensional shape with six square or rectangular sides • a number or quantity of related things dealt with as a unit • housing in a large building that is divided into separate units • (computer science) a sector or group of sectors that function as the smallest data unit permitted • an inability to remember or think of something you normally can do; often caused by emotional tension • a simple machine consisting of a wheel with a groove in which a rope can run to change the direction or point of application of a force applied to the rope • a metal casting containing the cylinders and cooling ducts of an engine • an obstruction in a pipe or tube • a platform from which an auctioneer sells • the act of obstructing or deflecting someone's movements verb • render unsuitable for passage • hinder or prevent the progress or accomplishment of • stop from happening or developing • interfere with or prevent the reception of signals • run on a block system • interrupt the normal function of by means of anesthesia • shut out from view or get in the way so as to hide from sight • stamp or emboss a title or design on a book with a block • obstruct • block passage through • support, secure, or raise with a block • impede the movement of (an opponent or a ball) • be unable to remember • shape by using a block • shape into a block or blocks • prohibit the conversion or use of (assets)
	hinder				verbv
	adjective satellite • located at or near the back of an animal verb • be a hindrance or obstacle to • hinder or prevent the progress or accomplishment of • put at a disadvantage
	impede				verbv
	verb • be a hindrance or obstacle to • block passage through
	inhibit				verbv
	verb • prohibit, forbid, or prevent from doing something • limit, block, or decrease the action or function of • consciously restrain from showing; of emotions, desires, impulses, or behavior • make (someone) self-conscious and as a result unable to act naturally
	obstruct				verbv
	verb • hinder or prevent the progress or accomplishment of • block passage through • shut out from view or get in the way so as to hide from sight
	prevent				verbv
	verb • keep from happening or arising; make impossible • stop (someone or something) from doing something or being in a certain state
	stop				verb, nounv, n
	noun • the event of something ending • the act of stopping something • a brief stay in the course of a journey • the state of inactivity following an interruption • a spot where something halts or pauses • a consonant produced by stopping the flow of air at some point and suddenly releasing it • a punctuation mark (.) placed at the end of a declarative sentence to indicate a full stop or after abbreviations • (music) a knob on an organ that is pulled to change the sound quality from the organ pipes • a mechanical device in a camera that controls size of aperture of the lens • a restraint that checks the motion of something • an obstruction in a pipe or tube verb • come to a halt, stop moving • put an end to a state or an activity • stop from happening or developing • interrupt a trip • cause to end • prevent completion • hold back, as of a danger or an enemy; check the expansion or influence of • seize on its way • have an end, in a temporal, spatial, or quantitative sense; either spatial or metaphorical • render unsuitable for passage • stop and wait, as if awaiting further instructions or developments
	anticatalyst				nounn
	noun • (chemistry) a substance that retards a chemical reaction or diminishes the activity of a catalyst
	dampener				nounn
	noun • a device that dampens or moistens something
	inhibitor				nounn
	noun • a substance that retards or stops an activity