真似まねしんぼ

also: まねしんぼう

Meanings

1

A childlike or informal word for someone who imitates others, often used by children or in a teasing manner.

弟おとうとはいつも私わたしの真似まねしんぼだ。
My little brother is always a copycat, imitating me.
「真似まねしんぼ！」と子こどもが友とも達だちに言いった。
The child called their friend a copycat!