· a decrease in rate of change; "the deceleration of the arms race"
Synonym(s): deceleration, slowing
Hypernym(s): change, alteration, modification
· the extent to which something is delayed or held back
Hypernym(s): delay, hold, time_lag, postponement, wait
· any agent that retards or delays or hinders; "flame-retardant"
Synonym(s): retardant, retardent
Hypernym(s): agent
· lack of normal development of intellectual capacities
Synonym(s): mental_retardation, backwardness, slowness, subnormality
Hypernym(s): stupidity
· the act of slowing down or falling behind