-
juvenile
,
-
immature
,
-
childlike
,
child-like
-
childish
-
girlish
-
silly
old use
I won't answer your silly questions!
Don't be silly, you're thirty years old!
-
sophomoric
-
babyish
-
infant
-
kidlike
-
infantine
-
chitty
-
childly
-
puerile
,
-
jejune
-
dappy
-
bairnish
,
bairnlike
,
bairnly
-
doited
-
kiddish