retard

definition: a person of subnormal intelligence
example:
speech part: noun
synonyms: imbecile
definition: cause to move more slowly or operate at a slower rate
example: This drug will retard your heart rate
speech part: verb
synonyms:
definition: lose velocity
example:
speech part: verb
synonyms: slow
definition: slow the growth or development of
example: The brain damage will retard the child's language development
speech part: verb
synonyms: check
definition: be delayed
example:
speech part: verb
synonyms:

How retard is being used?