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verb re·tard \ri-ˈtärd\

: to slow down the development or progress of (something)

Full Definition of RETARD

transitive verb
:  to slow up especially by preventing or hindering advance or accomplishment :  impede
:  to delay academic progress by failure to promote
intransitive verb
:  to undergo retardation
re·tard·er noun

Examples of RETARD

  1. The chemical will retard the spread of fire.
  2. The problems have retarded the progress of the program.

Origin of RETARD

Middle English, from Anglo-French or Latin; Anglo-French retarder, from Latin retardare, from re- + tardus slow
First Known Use: 15th century

Synonym Discussion of RETARD

delay, retard, slow, slacken, detain mean to cause to be late or behind in movement or progress. delay implies a holding back, usually by interference, from completion or arrival <bad weather delayed our arrival>. retard suggests reduction of speed without actual stopping <language barriers retarded their progress>. slow and slacken also imply a reduction of speed, slow often suggesting deliberate intention <medication slowed the patient's heart rate>, slacken an easing up or relaxing of power or effort <on hot days runners slacken their pace>. detain implies a holding back beyond a reasonable or appointed time <unexpected business had detained her>.

delay, procrastinate, lag, loiter, dawdle, dally mean to move or act slowly so as to fall behind. delay usually implies a putting off (as a beginning or departure) <we cannot delay any longer>. procrastinate implies blameworthy delay especially through laziness or apathy <procrastinates about making decisions>. lag implies failure to maintain a speed set by others <lagging behind in technology>. loiter and dawdle imply delay while in progress, especially in walking, but dawdle more clearly suggests an aimless wasting of time <loitered at several store windows> <children dawdling on their way home from school>. dally suggests delay through trifling or vacillation when promptness is necessary <stop dallying and get to work>.


noun re·tard

Definition of RETARD

\ri-ˈtärd\ :  a holding back or slowing down :  retardation
\ˈrē-ˌtärd\ often offensive :  a retarded person; also :  a person held to resemble a retarded person in behavior

First Known Use of RETARD

RETARD Defined for Kids


verb re·tard \ri-ˈtärd\

Definition of RETARD for Kids

:  to slow down :  delay <Bad weather retarded our progress.>
Medical Dictionary


transitive verb re·tard \ri-ˈtärd\

Medical Definition of RETARD

:  to slow up especially by preventing or hindering advance or development <retard spoilage> <retard hair loss>


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