Akademik

retardation

noun

1. a decrease in rate of change (Freq. 1)

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the deceleration of the arms race

• Syn: ↑deceleration, ↑slowing

• Ant: ↑acceleration (for: ↑deceleration)

• Derivationally related forms: ↑retard, ↑slow (for: ↑slowing), ↑decelerate (for: ↑deceleration)

• Hypernyms: ↑change, ↑alteration, ↑modification

2. the extent to which something is delayed or held back

• Derivationally related forms: ↑retard

• Hypernyms: ↑delay, ↑hold, ↑time lag, ↑postponement, ↑wait

3. the act of slowing down or falling behind

• Syn: ↑slowdown, ↑lag

• Derivationally related forms: ↑retard, ↑lag (for: ↑lag), ↑slow down (for: ↑slowdown)

• Hypernyms: ↑delay, ↑holdup

4. any agent that retards or delays or hinders

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flame-retardant

• Syn: ↑retardant, ↑retardent

• Derivationally related forms: ↑retard

• Hypernyms: ↑agent

5. lack of normal development of intellectual capacities

• Syn: ↑mental retardation, ↑backwardness, ↑slowness, ↑subnormality

• Derivationally related forms: ↑subnormal (for: ↑subnormality), ↑slow (for: ↑slowness), ↑backward (for: ↑backwardness), ↑retard

• Hypernyms: ↑stupidity

• Hyponyms:

↑abnormality, ↑mental defectiveness, ↑moronity, ↑mental deficiency, ↑idiocy, ↑amentia, ↑imbecility

Useful english dictionary. 2012.