I’m not that many levels in but I have had some simple transitive - intransitive vocab at apprentice level for almost as long as I remember. 助ける、助かる、転がる、転がす、転げる and so on all give me endless trouble at remembering which is which.
Have you got any vocab or kanji that have hung around like a bad smell for way too long?
I think mine is probably 糸 (thread). I always type the answer as lineage 系. Look how similar they are. T-T
I have the hardest time with the police ones: 警察官; 警察署; 警察庁; 警視庁. I already missed a chance to burn them and I’m not looking forward to seeing them again.
I have some pretty egregious ones…
Kanji 希
Vocab 続々
I also fumble the police ones all the time too, those ones are tricky
I haven’t yet got to lineage yet but I can already see that will catch me out!
Oof, those look tricky, not looking forward to getting to those
Another one I struggle with is 考. At first I kept messing it up because I was typing the answer as “thought” instead of “think.” Well, then WaniKani taught me the kanji 孝, which means filial piety. So then I started messing up 考 and 孝. I will get it one of these days!
理論。I always answer “reason” instead of “theory” because I tend to guess the meaning from the first kanji, not the second.
I have a similar issue but instead its 考 and 教 and 老, but that’s mostly because I have a font changing plugin that is supposed to make it so I’m exposed to many more realistic ways of writing them but instead just confuses me on these ones
For me it’s 報道. I always pick a word around the answer, but never the answer. I added the user synonym “journalism” yesterday to give myself some extra input. Let’s see.
The other one is probably 直行. Always get the kana wrong somehow 
都庁 is hilarious because it very specifically means Tokyo Government Office but WaniKani insists that it is “metro government” which just did not stick
when I found out that it’s effectively a proper noun it started sticking much better (user synonyms go brrr)
I still haven’t burned 々and 夕 from level 2…
I had 々 show up earlier this week in my reviews and set it back a few places also haha
It’s 族 for me.
Simply because, for whatever reason, I always answer the meaning with ‘clan’ instead of ‘tribe’.
I’ve gotten so tired of it that I wrote down the answer on a sheet of paper and currently have it taped to my wall. 
All of the “thoughts”/“feelings”/“expectations”/“circumstances” ones are pretty tough for me. I got 事情 specifically down to Apprentice 2 the other day.
I managed to find a solution to the “anticipation” and “expectation” combos if this helps maybe:
予想外 - beyond expectations
予想内 - within expectations
Then 想定 becomes an outlier and means something else 
My old friend 部室、この野郎。。。
I have a bad habit of getting 部屋 and 部室 consistently the wrong way round…
I heard that’s common for deejays.
