Synonyms of the word

retardant

• adj. (often in combination) Serving to retard (slow down) the action of something.
• n. (often in combination) Something that serves to retard (slow down) the action of something.

agent

• n. One who exerts power, or has the power to act.
• n. One who acts for, or in the place of, another (the principal), by authority from him/her; someone entrusted…
• n. A person who looks for work for another person.
• n. Someone who works for an intelligence agency.
• n. An active power or cause or substance; something which has the power to produce an effect.
• n. (computing) In the client-server model, the part of the system that performs information preparation and…
• n. (grammar) The participant of a situation that carries out the action in this situation, e.g. "the boy"…

retardation

• n. The act of retarding or delaying; hindrance.
• n. The extent to which anything is retarded; the result of any retarding or delay; mental, social, or physical…
• n. That which retards; an obstacle; an obstruction.
• n. (physics) Deceleration; reduction in the magnitude of velocity.
• n. (music) A suspension which resolves upwards.