Chip for Japanese, English and etc Smirk in Japanese How do you say ‘Smirk’ in Japanese? Native Japanese people often say にやつく（niyatsuku)、ニヤリとわらう(niyarito-warau). 彼はにやついている。 （Karewa niyatsuiteiru.) Talk to us in Japan on Skype! Book now 日本語＞＞ Tweet Related posts: We love ‘TEISHOKU’ in Japanese restaurants. Food in UK, US & Japan You scare me! in Japanese! What time and date is it in JAPAN? !