JMdict: 1438360

天井知らず 【てんじょうしらず】

  1. [adj-no,adj-na,n] skyrocketing (prices)
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Kanji in this word:

Kanji Meanings On Readings Kun Readings Grade
Heavens, Sky, Imperial テン あまつ, あめ, あま- 1
Well, Well Crib, Town, Community セイ, ショウ S
Know, Wisdom し.る, し.らせる 2