cause to move more slowly or operate at a slower rate; "This drug will retard your heart rate"

lose velocity; move more slowly; "The car decelerated"

Bank-protection structure designed to check the riparian velocity and induce silting or accretion.

To keep delaying; to continue to hinder; to prevent from progress; to render more slow in progress; to impede; to hinder; as, to retard the march of an army; to retard the motion of a ship; -- opposed to accelerate.

Retardation; delay.

slow the growth or development of; "The brain damage will retard the child's language development"

Setting the ignition timing so that spark occurs later (fewer degrees before TDC).

a person of subnormal intelligence

a person who is stupid or inept, especially in social situations.

A mentally retarded person.

offensive term for a mentally handicapped person. Derived from retarded (Blasted).

To put off; to postpone; as, to retard the attacks of old age; to retard a rupture between nations.

To stay back.