Denshi Jisho — Online Japanese dictionary

ひくつ menial; meanness; servility; abject
Common word, Na-adjective, Noun 
ふくつ persistence; fortitude; indomitability
Common word, Noun, No-adjective, Na-adjective 
りくつ theory; reason
Common word, Noun 
ざくつ buckling
Noun 
退 たいくつ tedium; boredom
Common word, Na-adjective, Noun, Suru verb 
うっくつ gloomy
Noun, Suru verb 
こうくつ retroflexion
Noun, Suru verb, No-adjective 
ぜんくつ bend forward
Noun, Suru verb 
そこくつ plantar flexion
Noun, Suru verb 
たいくつ tedium; boredom
Out-dated kanji, Na-adjective, Noun, Suru verb 
はいくつ dorsiflexion; dorsal flexion
Noun 
へんくつ eccentricity; bigotry; obstinacy
Na-adjective, Noun 
へんくつ eccentricity; bigotry; obstinacy
Irregular kanji usage, Na-adjective, Noun 
屁理 へりくつ sophism; quibble; hair-splitting; argument for argument's sake; cavil; frivolous objections
Noun 
きゅうくつ narrow; tight; stiff; rigid; uneasy; formal; constrained
Common word, Na-adjective, Noun 
似非理 えせりくつ sophistry
Noun 
不撓不 ふとうふくつ inflexibility; tenacity; indomitableness
Na-adjective, Noun 
子宮後 しきゅうこうくつ retroversion of the uterus; tipped uterus
Noun 

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