顽皮 (wán pí): Naughty (Adjective) — Meaning & Stroke Order

Although he appears quiet on the outside, there's a naughty streak deep down in his nature.

Don't you think his recent naughty behavior is a bit unusual?

He is not inherently naughty; he just craves more attention.

Although that naughty child caused trouble, his attitude when apologizing was very sincere.