It’s the sequel to One yojijukugo (four character idiomatic compound) for each level.
Sorry, I don’t know of any way to get anything like the star ratings for these, but they all came from things like lists of common idioms, and study lists for elementary school students, so I don’t think anything super rare is in here.
I prioritized ones that included words that WK doesn’t teach, like 報いる or 怪我
I didn’t bother providing literal translations, because I thought you might enjoy trying to figure those out.
Levels 1-10
Summary
Level 1: 力を入れる
ちからをいれる
to put effort into; to strain
例: あの政治家は、自然環境の保護に力を入れたいと言っている。
That politician says they want to make an effort to protect the environment.
Level 2: 目がない
めがない
extremely fond of; having a weakness for; being a sucker for
例: 甘いものには、目がない。
I’m a sucker for sweet things.
Level 3: シラを切る
しらをきる (also written as 白を切る, but I like that it would still count for this level)
to feign ignorance; to play innocent
例: シラを切っても、証拠が挙がっているぞ。
Even if you feign ignorance, we’ve got evidence, you know.
Level 4: 耳が早い
みみがはやい
being first to know about something
例: ゲームマニアの弟は新しいゲームの情報には耳が早い。
My gamer brother is always the first to know about new game info.
Level 5: 気を回す
きをまわす
to read too much into things; to get wrong ideas by letting one’s imagination run wild
例: 気を回しすぎて、いつも失敗してしまうので、もっと気楽に生きていけたらなと思う。
I wish I could be more carefree, because I always read too much into stuff and end up screwing things up.
Level 6: 首を長くする
くびをながくする
to eagerly look forward to
例: 大好きなアーティストがこの県に来るのを首を長くして待っていた。
I was eagerly awaiting my favorite artist coming to this prefecture.
Level 7: くちばしが黄色い
くちばしがきいろい
fledgling; young and inexperienced; green; wet behind the ears
例: くちばしが黄色い少年ばかり集めて軍隊を作るなんて、この国が終わっているなぁ。
We’re putting together an army with nothing but wide-eyed boys. We’re done for.
Level 8: さじを投げる
さじをなげる
to give up (something as hopeless); to throw in the towel
例: こんなに強そうな相手には勝てないと、戦う前にさじを投げる。
If I’m facing an opponent that looks so strong that I can’t win, I just throw in the towel.
Level 9: 図に乗る
ずにのる
to get carried away; to push one’s luck; to push a good thing too far
例: 最初はうまくいっていたのに、図に乗って銀行から借金をして店を拡大したところ、うまくいかなくなったみたいですね。
Everything was going well at first, but when they got carried away borrowing money to expand the shop, it seems like it started to go wrong.
Level 10: 肉が落ちる
にくがおちる
to lose weight; to slim down
例: 大人になったら、自然と肉が落ちるんですか。
When you become an adult, do you just lose weight naturally?
Levels 11-20
Summary
Level 11: 後ろ指を指される
うしろゆびをさされる
to be talked about behind one’s back
Level 12: 根に持つ
ねにもつ
to hold a grudge; to hold something against somebody
Level 13: 輪をかける
わをかける
to exceed; to be even more (so); to exaggerate
Level 14: 骨が折れる
ほねがおれる
to require much effort; to be hard to do
Level 15: 軍配をあげる
ぐんばいをあげる
to declare someone the winner of a competition
Level 16: ミイラ取りがミイラになる
みいらとりがみいらになる
attempting to persuade someone and ending up getting persuaded yourself
Level 17: 二階から目薬
にかいからめぐすり
something that cannot be done no matter how hard one tries (and is slightly frustrating because of this)
Level 18: 一矢報いる
いっしむくいる
to retaliate; to return a blow; to strike back at; to retort
Level 19: 口が減らない
くちがへらない
always having another argument ready; never at a loss for words
Level 20: 鳴かず飛ばず
なかずとばず
living in obscurity; lying low; remaining unnoticed
Levels 21-30
Summary
Level 21: 目の敵にする
めのかたきにする
to hate the very sight of; to hold a grudge against; to treat like an enemy
Level 22: 寝耳に水
ねみみにみず
bolt from the blue; great surprise
Level 23: あうんの呼吸
あうんのこきゅう
the harmonizing, mentally and physically, of two parties engaged in an activity; dancing to the same beat
Level 24: 猫の額
ねこのひたい
tiny area; tiny surface
Level 25: 舌を巻く
したをまく
to be astonished
Level 26: 怪我の功名
けがのこうみょう
fortunate error; lucky break; fluke
Level 27: 力を貸す
ちからをかす
to assist; to help out
Level 28: 肩を並べる
かたをならべる
to be on par with
Level 29: 板につく
いたにつく
to get used to one’s work; to become accustomed to one’s position
Level 30: 懐を肥やす
ふところをこやす
to feather one’s nest; to line one’s pockets
Levels 31-40
Summary
Level 31: 棒に振る
ぼうにふる
to make a mess of; to sacrifice; to waste
Level 32: 恩に着せる
おんにきせる
to remind someone of a favor you’ve done; to demand gratitude
Level 33: 伝家の宝刀を抜く
でんかのほうとうをぬく
to employ one’s secret weapon; to play one’s trump card
Level 34: 煙幕を張る
えんまくをはる
to throw up a smokescreen
Level 35: 油を売る
あぶらをうる
to loaf (particularly on the job); to idle one’s time away
Level 36: 二の足を踏む
にのあしをふむ
to hesitate; to think twice; to shy; to flinch
Level 37: 頭を抱える
あたまをかかえる
to be at wits’ end; to be greatly perplexed
Level 38: 耳を傾ける
みみをかたむける
to lend an ear; to give an ear to
Level 39: 群を抜く
むれをぬく
to surpass the rest (e.g. of a large group); to stand out from the crowd
Level 40: 薄氷を踏む
はくひょうをふむ
to be on thin ice
Levels 41-50
Summary
Level 41: 虎の子
とらのこ
one’s treasure; precious
Level 42: 手に汗を握る
てにあせをにぎる
to sit on the edge of one’s seat; to be in breathless suspense
Level 43: 年貢の納め時
ねんぐのおさめどき
time to pay the piper
Level 44: 血も涙もない
ちもなみだもない
cold-blooded; unfeeling; heartless; heart of stone; inconsiderate
Level 45: 腕を磨く
うでをみがく
to polish one’s skills
Level 46: 泡を食う
あわをくう
to be flurried; to be confused; to lose one’s head
Level 47: 掌を返す
てのひらをかえす
to change one’s attitude quickly
Level 48: 蚊の鳴くような声
かのなくようなこえ
an extremely quiet voice
Level 49: 鶴の一声
つるのひとこえ
the final word; voice of authority
Level 50: 肝に銘ずる
きもにめいずる
to inscribe on one’s heart
Levels 51-60
Summary
Level 51: 奥歯に物が挟まる
おくばにものがはさまる
to talk around something; to imply something in a roundabout way
Level 52: 大風呂敷を広げる
おおぶろしきをひろげる
to talk big; to be bombastic
Level 53: 瓜二つ
うりふたつ
two peas in a pod
Level 54: 鎌をかける
かまをかける
to trick someone; to ask a leading question
Level 55: 元の木阿弥
もとのもくあみ
ending up right back where one started
Level 56: 拍車を掛ける
はくしゃをかける
to spur (on); to expedite; to encourage
Level 57: 烏の行水
からすのぎょうずい
a quick bath
Level 58: お茶を濁す
おちゃをにごす
to be evasive; to give an evasive answer; to cook up a specious story to get out of an uncomfortable situation
Level 59: 峠を越す
とうげをこす
to pass the peak (of something); to get through the most difficult part; to be over the worst (e.g. an illness)
Level 60: 狐につままれる
きつねにつままれる
to be confused
(number 29). I didn’t actually realise the first was idiomatic.