- しっています。Shitte imasu. I have knowledge/information. → I know.
(casual しって(い)る。Shitte(i)ru.) - わかります。Wakarimasu. I understand. (I know.)
- しりません。Shirimasen. I have no knowledge/information. → I don't know.
(X しっていません。Shitteimasen.)
(casual) しらない。Shiranai. - わかりません。Wakarimasen. I don't understand. (I don't know.)
"I know." and "I don't know." in Japanese
X = no good, incorrect, wrong
Updated Dec 1, 2020