youngest
eldest
lastborn
pretween
baby of the family
second cousin
oldest
sister
tacker
paternal cousin
half-cousin
kindred
nibbling
baby
sibset
feely
grandchild
only son
girl
maternal cousin
subteen
sesquiple cousin
crib midget
irregular double cousin
titch
fullsib
crib lizard
half blood
only child
small fry
catworm
kinder
youngfolk
uterine sibling
co-aunt
juvenile
grandson
family grouping
runt
sesquiple first cousin
irregular double first cousin
brood
half sister
great-grandchild
little girl
halfling
pretoddler
little boy
shaver
first cousin once removed
half-uncle
cognati
runt of the litter
brother
pigeon pair
half niece
adult third culture kid
half-first cousin
brother german
cousin
twinsome
moppetry
brat
nullius filius
fruit of one's loins
littlie
niece
young'un
family of orientation
kipper
tiny
third cousin
polyfamily
second cousin once removed
great-niece
uncle
grandniece