1. (noun) subnormality
the state of being less than normal (especially with respect to intelligence)
Synonyms: backwardness, mental retardation, slowness, retardation
2. (noun) retardation, mental retardation, backwardness, slowness, subnormality
lack of normal development of intellectual capacities
Synonyms: lag, retardant, deliberation, slowing, backwardness, slowdown, deceleration, deliberateness, ineptness, retardation, mental retardation, clumsiness, unhurriedness, retardent, subnormality, awkwardness, maladroitness, slowness, ineptitude
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