This site will be taken down March 31st, 2026.

This was not an easy decision to make. For the last couple years, I have been struggling to find motivation for this site and to keep up with basic maintenance and security updates. With the rise of AI and more sophisticated tools, the usefulness of sites like this is questionable and traffic has nose-dived. I just don't have it in me to keep doing this. Thank you all for 10 years of support!

Zach

ニヤニヤ

Readings

Kana: ニヤニヤ、にやにや
Romaji: niyaniya, niyaniya
Kana
Romaji

Definition

adv
vs
1

grinning; broad grin; smirk

Note: onomatopoeic or mimetic word

Example Sentences

さっきからあの(ひと)(いち)(にん)でにやにやして。(あや)しい。
➥That person has had an odd grin on his face for a while. What do you suppose is behind it?
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なにニヤニヤしてるんだよ。(なに)かいいことあったのか。
➥What are you smirking at? Did something good happen?
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