ニヤニヤ
Reading: ニヤニヤ
Meaning: to grin, to smirk
Listen to pronunciation
Example Sentence
何 か 良く ない こと を 考えて ニヤニヤ して いる
He's smirking while thinking about something bad.
Usage Notes
Describes a sly or knowing smile, sometimes with negative connotations.
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