After seeing a request for an I don’t know button I made such an User Script. It adds a “?” button next to the normal answer button on reviews (not lessons) and if pressed it automatically submits an incorrect answer.
The script can be installed from: https://greasyfork.org/en/scripts/7576-wanikani-i-don-t-know-button
There is also a GitHub page for the script at https://github.com/nibarius/wk-wakaran
あ、すげえぇ！グッドジョブ！ありがとうね、先生！
My “I don’t know” button is a keyboard mash and enter. 
Mine is A and enter…
SnowfireXV said... Mine is A and enter...That seems like it would be a lot kinder on the keyboard, but not as therapeutic.
Hey. I was the one who requested this.
I know I’m almost ten months late but thank you very much for this! Reading my original thread, I sounded like a fedora-tipping douche throughout it and didn’t expect anyone to take it. Little did I know a kind-hearted developer took it upon himself to do it.
Again, thank you. I do think it’s useful for me specifically, I will use it, and I am grateful for it.
My “I don’t know” is いどこ…or the closest I could come to “idk”. 
SnowfireXV said... Mine is A and enter...Try space and enter, is easier to type and you don't risk having a correct answer (if a kanji happens to have a reading of あ)
I remember that Viet got a little touchy because the skip/idk button that was introduced a year or two ago was not well received by a few vocal people (me included). It’s unnecessary imo, as it’s faster to type something than fiddle with the mouse and less likely to result in a mistaken ‘idk’ (which was the main issue with the old one), but as an addon, I can just ignore it. So good luck to you!
Yeah, I just do “asdf” -> Enter, F to look at definition and go on my merry (but slightly disgruntled because I forgot a word) way. Don’t really see the need for this but probably a fun little programming exercise anyway.
EskimoJo said…It’s unnecessary imo, as it’s faster to type something than fiddle with the mouse and less likely to result in a mistaken ‘idk’
FlockOfFlames said… Try space and enter, is easier to type and you don’t risk having a correct answer (if a kanji happens to have a reading of あ)This is actually not a bad way to do it either. I’m surprised it wasn’t suggested in the original thread.
OSad said... Hey. I was the one who requested this.And I'm more than 4 months late reading your answer (to bad there isn't any notification feature in the forum). Glad you like it!
I know I'm almost ten months late but thank you very much for this! Reading my original thread, I sounded like a fedora-tipping douche throughout it and didn't expect anyone to take it. Little did I know a kind-hearted developer took it upon himself to do it.
Again, thank you. I do think it's useful for me specifically, I will use it, and I am grateful for it.
hey there,
i really like the idea of this button as I hate just putting in something wrong on (it feels like i’m trying to learn that wrong meaning or reading on purpose).
Unfortunately when i needed to use the button yesterday, the answer barr was giving me just a shake to retype what was written in there instead of accepting it as a “wrong answer”.
Is this a mistake or might it be interfering with some other script like “Double Check” or “Fast abridged wrong/multiple answer”?
It seems like WaniKani didn’t like the more exotic characters I used when inputing a wrong reading (meaning seems to work fine). I’ve pushed a new version of the script that should fix this problem.
Works fine now, thanks. 
