ニヤッと笑う
Expression- 1to give a broad grin ; to smirk Translated by Jiyomi
Other writings and readings
にやっと笑うにやっとわらう
expressions (phrases, clauses, etc.) · Godan verb with 'u' ending
JMdict entry 2720790. Source and licence.
JMdict entry 2720790. Source and licence.