Etymology: Middle English, from Old English slāw; akin to Old High German slēo dull
Date: before 12th century
1 a: mentally dull :stupid<a slow student>b: naturally inert or sluggish 2 a: lacking in readiness, promptness, or willingness b: not hasty or precipitate <was slow to anger> 3 a: moving, flowing, or proceeding without speed or at less than usual speed <traffic was slow>b: exhibiting or marked by low speed <he moved with slow deliberation>c: not acute <a slow disease>d:low, gentle<slow fire> 4: requiring a long time :gradual<a slow recovery> 5: having qualities that hinder rapid progress or action <a slow track> 6 a: registering behind or below what is correct <the clock is slow>b: less than the time indicated by another method of reckoning c: that is behind the time at a specified time or place 7 a: lacking in life, animation, or gaiety :boring<the first chapter is a bit slow>b: marked by reduced activity <business was slow><a slow news week>