sonny (n.)

• boy
• bub
• buck
• bud
• buddy
• child
• colt
• cub
• daughter
• descendant
• fellow
• fledgling
• grandchild
• granddaughter
• grandson
• heiress
• hobbledehoy
• lad
• laddie
• master
• offspring
• pup
• puppy
• schoolboy
• scion
• son
• stepchild
• stepdaughter
• stepson
• whelp
• youth