slow

/ˈslō/

Middle English, from Old English slāw; akin to Old High German slēo dull

adjective

  1. mentally dull : stupid

  2. naturally inert or sluggish

  3. lacking in readiness, promptness, or willingness

a slow student

adverb

  1. slowly

verb

  1. to make slow or slower : slacken the speed of —often used with down or up

  2. to go or become slower

slow a car

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. retard suggests reduction of speed without actual stopping.