- deceleration, slowing, retardation - a decrease in speed; "the deceleration of the arms race"
--1 is a kind of speed, swiftness, fastness
Derived forms: verb retard3, verb retard4 - retardation - the extent to which something is delayed or held back
--2 is a kind of delay, hold, time lag, postponement, wait
Derived form: verb retard3 - retardant, retardent, retardation - any agent that retards or delays or hinders; "flame-retardant"
--3 is a kind of agent
Derived form: verb retard2 - retardation, mental retardation, backwardness, slowness, subnormality - lack of normal development of intellectual capacities
--4 is a kind of stupidity
--4 has particulars:abnormality, mental defectiveness; moronity, mental deficiency; idiocy, amentia; imbecility; mongolism, mongolianism, Down's syndrome, Down syndrome, trisomy 21 Derived form: verb retard1 - slowdown, lag, retardation - the act of slowing down or falling behind
--5 is a kind of delay, holdup
Derived forms: verb retard3, verb retard4