1. With hand brought forward and up from below shoulder level
   - underhand, underhanded

1. With the hand swung below shoulder level
   "throwing a ball underarm"
   - underhand

Encyclopedia: Underarm

• storage
• storage allocation
• storage area
• storage battery
• storage cell
• storage device
• storage locker
• storage medium
• storage ring
• storage room
• storage space
• storage tank
• storage warehouse
• storage-battery grid
• storax
• storax family
• store
• store cheese
• store detective
• store-bought
• stored-program
• storefront
• storehouse
• storekeeper
• Storeria