Based on giants, new words formed by adding one letter at the beginning or end:
bbasting   cactings  casting   eeasting  eatings  ingates  ingesta  seating  teasing   ffasting   hhasting   kskating  staking  takings  tasking   llasting  salting  slating  staling   mmasting  matings   oagonist  gitanos   ppasting   rgastrin  gratins  ratings  staring   vstaving   wtawsing  wasting   ystaying  stygian