Well I’m 3/4 of the way through WK’s program and about to make it into the fast levels so I thought it would be a good time to offer some feedback tempered by experience.
First off, I love this site. I don’t want it to let me go any faster, I don’t want it to let me unlock stuff I’ve already seen from later levels to study them sooner, I like the silly radicals and mnemonics (even if I do use the keisei script to bypass them sometimes), and I don’t want it to cover all the vocab in core 10K or whatever. One website to teach me how to read the kanji, while I pick up more vocab from native material and check imabi every so often for grammar, is perfect for my study needs.
That said, sometimes I see a kanji I already know in a compound word, and realize WK only taught me the kun’yomi, despite being able to guess its meaning easily enough. Or listening to music or anime I’ll hear a verb I need to look up, and jisho will smack me with a familiar kanji, and I can’t help but think, “wtf, why didn’t WK teach me this one had a kunyomi too?” Even with WK’s stated mission being to teach us how to read the kanji and nothing more, each time it feels like a little failure at that mission.
To that end I’ve been keeping a list, since about 10 levels ago, of words that have given me this wtf moment. I made sure to include only those jisho lists as “common”, for whatever that’s worth, and label them by JLPT level (although aiui even that’s kinda fuzzy).
I can’t think of any reason WK shouldn’t teach these kanji readings
明らか・あきらか - obvious, evident, clear, plain (N3)
度・たび - time, each time (N3)
満ちる・みちる - to be full, to wax/rise (N3) (and/or 満たす (N1))
種・たね - seed, material, source (N3)
去る・さる - to leave, to elapse (N3)
疑う・うたがう - to doubt, to distrust (N3) (and/or 疑い)
結ぶ・むすぶ - to tie, to bind (N3)
優れる・すぐれる - to surpass, to excel (N3)
呼吸・こきゅう - breathing, knack (N3) (呼 onyomi)
抱える・かかえる - to hold, to carry in arms (N3)
問う・とう - to ask, to inquire, to accuse (N1)
重ねる・かさねる - to pile up, to overlap (N2) (and/or 重なる)
押さえる・おさえる - to restrain, to suppress (N2) (or as 抑える)
探る・さぐる - to investigate, to search for (fumbling/groping nuance) (N2)
回答・かいとう - reply, answer (N2) (答 onyomi)
背負う・せおう - to carry on back, to take responsibility for (N2) (or 負う (N1))
青春・せいしゅん - youth (N1 (altho basically impossible to watch anime w/o learning this one)) (春 onyomi)
強いる・しいる - to force, to compel, to coerce (N1)
記す・しるす - to write down, to note (N1)
軽率・けいそつ - rash, careless (N1) (率’s 2nd onyomi)
歩む・あゆむ - to walk, to go on foot (N1) (or 歩み寄る) thanks @Vanilla
築く・きずく - to build, to amass (N1)
I’ve also got a bunch of other words whose cases to be added are a bit weaker than the above’s, for whatever reason. Again all “common words”; categories here in descending order of (perceived, in my opinion) importance.
Words with readings WK teaches but not until much later levels
様子・ようす - state, circumstances, appearance (N3) (子’s 2nd onyomi not taught until level 46) (vanilla beat me to this one )
追加・ついか - supplement, append (N2) (appears on websites’ UIs often e.g. twitter, youtube) (追 onyomi not taught until level 53)
行儀・ぎょうぎ - manners, behaviour (N3) (行’s 2nd onyomi not taught until level 57)
望遠鏡・ぼうえんきょう - telescope (N2) (鏡 onyomi not taught until level 42) (ok maybe uncommon for most ppl; I follow some astronomy stuff on twitter though)
Words already taught but with alternate readings I would add
開く・ひらく - to open (nuance of unfolding/expanding) (N4)
打つ・ぶつ - to hit (a person) (N3)
空く・すく - to become empty (esp. hungry) (N3)
額・ひたい - forehead (N3)
摘む・つまむ - to pinch, to pick up/out (N1)
Words usually written in kana but maybe common enough to learn anyway
等・など - etcetera, the likes of (N5)
温い・ぬるい - lukewarm, tepid (N5)
正に・まさに - surely, certainly, right then (N3) (まさ reading common in names)
怪我・けが - injury (N3) (怪’s け reading otherwise not taught)
留まる・とどまる - to remain, to stay (N2) (or as alternate reading of 止まる)
細やか・ささやか - meager, modest (heard in songs a lot)
Words which are ateji rather than actual kanji readings but still very common
八百屋・やおや - greengrocer (N5)
微笑む・ほほえむ - to smile (N3)
流行る・はやる - to be popular/prevalent, to flourish (N2)
Words I found exploring jisho rather than personally encountering in native material
工夫・くふう - scheme, device (N3) (工’s 2nd onyomi) (or 大工, carpenter (N2))
和やか・なごやか - mild, calm, amiable, peaceful (N1)
健やか・すこやか - vigorous, healthy (N1)
速やか・すみやか - speedy, prompt, smooth
Finally, just in case adding new words is an issue of total vocabulary and you’d need to remove stuff to add anything new, I picked out a few vocabs I feel serve no point in WK’s curriculum. (Considering I built this list starting at level 30 it’ll be a bit biased to hell words.)
Words to remove if it’s an issue of making room
イギリス人 - this one’s description straight up admits that it’s a stretch that it belongs on a kanji learning site lol
恥ずかしがる - 恥ずかしい is already taught and by level 37 I’d expect people to know the がる grammar already
御飯 - ご飯 already taught on lvl 15 and 御 has plenty other examples
宜しくお願いします - both halves of it already taught separately and i’d expect anyone lvl 40 to know it already
携帯ストラップ - I appreciate the katakana practice but if I see this in the wild already knowing 携帯 I promise I will have 0 trouble
Well, that’s my piece. Please keep in mind that I’m writing out of love for WK, because I love having all my jp study (apart from native material consumption) concentrated in one place, and I’d like it to be even better for future users if possible. I also have some gripes with certain mnemonics and synonym inconsistency but I feel more strongly about this issue so I’ll leave those for another day and keep the topic more focused.
Discuss away. New vocab submissions for the list also welcome.