by Tomoyuki Higuchi
How do you say “I don’t know.” in Japanese?
Today’s phrase is :
I don’t know.
わかんない。
wakannai
- I = わたしは (watashiwa)*
- don’t know = わかんない (wakannai)
*We do not usually use “わたしは (watashiwa)” in spoken language.
If you want to speak politely, you can say :
わかんないです。
wakannaidesu