Is “Childish” a Scrabble word?
Yes
CHILDISH
Valid in at least one Scrabble dictionary
Valid in these dictionaries
SOWPODS / CSW
Scrabble UK & International
TWL / NWL
Scrabble North America
Large English Dictionary
General English word list
Meaning of Childish
/ˈtʃaɪldɪʃ/
adjective
1.Of or suitable for a child.
2.Behaving immaturely.
“Your childish temper tantrums are not going to change my decision on this matter.”
Synonyms: immature, infantile, juvenile, puerile, silly, unbecoming