retarded

1. 1
   mental disabilityadjectiveoffensivedated

   An old word, now often hurtful, for having a mind that is slow to develop.

   Note
2. 2
   very stupidadjectivederogatoryoffensivecolloquial

   A rude and hurtful way of saying that someone or something is very stupid.

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3. 3
   adjective

   Slowed down or held back, especially in growing or developing.

   Poor soil led to retarded growth in the young trees.

   The mechanic said the engine was running with retarded timing.

   Similardelayed, stunted

   Oppositeadvanced, accelerated

   Note
4. 4
   verb

   Simple past and past participle of retard. Use it for the past, or after has, have, had, is, was or were.

   The cold spring retarded the growth of the crops.

   The spread of the fire was retarded by the special paint on the walls.

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5. 5
   physicsadjective

   In physics, describing a value for an electric or magnetic field that allows for the time radiation takes to travel.

   The retarded potential tells you the field of a moving charge, allowing for travel time.

   Our physics class learned to work out retarded potentials last week.

   Oppositeadvanced

   Note

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