Question

abstract noun of child​

Answer 1

An abstract noun denotes some idea, quality, or state. I am on the fence for “childishness.” Being “childish” means that you are acting like a child—not that you are a child.

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Answer 2

Answer:

Its childish/childishness  

Step-by-step explanation:

childish/ishness  means acting like a child

I hope this helps you