SOMETIME is a 8 letter word that starts with S.

1. \Some"time`\, adv.
   1. At a past time indefinitely referred to; once; formerly.
   
            Did they not sometime cry ``All hail'' to me?
                                                  --Shak.
   
   2. At a time undefined; once in a while; now and then;
      sometimes.
   
            Sometime we see a cloud that's dragonish, A vapor
            sometime like a bear or lion.         --Shak.
   
   3. At one time or other hereafter; as, I will do it sometime.
      ``Sometime he reckon shall.'' --Chaucer.
   
   
   
   

2. \Some"time`\, a.
   Having been formerly; former; late; whilom.
   
         Our sometime sister, now our queen.      --Shak.
   
         Ion, our sometime darling, whom we prized. --Talfourd.