Other hyponyms of tiddler include
bairn,
buster,
changeling,
child prodigy,
infant prodigy,
wonder child,
foster-child,
fosterling,
imp,
monkey,
rapscallion,
rascal,
scalawag,
scallywag,
scamp,
kiddie,
kiddy,
orphan,
peanut,
picaninny,
piccaninny,
pickaninny,
poster child,
kindergartener,
kindergartner,
preschooler,
silly,
sprog,
bambino,
toddler,
tot,
yearling,
urchin,
street child,
waif.