Based on erase, new words formed by adding one letter at the beginning or end:
ccrease   derased  reseda  seared   gagrees  eagers  eagres  grease  ragees   hhaeres  hearse   iaeries  easier   krakees   llarees  leaser  reales  resale  reseal  sealer   mameers  ramees  seamer   nranees   pserape   taretes  easter  eaters  reseat  seater  teaser   ureseau  urease   vaverse  reaves   zrazees