こつこつ

コツコツ こつこつ

unflaggingly, steadily, untiringly, laboriously

こせつく

to be stressed, to be fussy, to be restless

こけつ転びつ

こけつまろびつ

(hurrying along) falling and stumbling, falling all over oneself

しつこい

しつっこい

insistent, obstinate, persistent, tenacious

こじつけ

distortion, stretch, strained interpretation, technicality, casuistry, sophistry

つべこべ

complaining, nitpicking

靴底

くつぞこ くつ ぞこ

shoe sole

槌骨

つちこつ ついこつ

malleus (bone of the ear)

下顎骨

かがくこつ か がくこつ

mandible, lower jawbone

骨発育

こつはついく

Bone Development

骨学

こつがく

osteology

骨肉

こつにく

one's own flesh and blood, blood relations, kinsmen

黒質

こくしつ

substantia nigra

焦げ付く

こげつく

to get burned and stuck on (e.g. rice in a pan)

酷熱

こくねつ

intense heat

国立

こくりつ

national

国鉄

こくてつ

national railway (esp. Japan National Railways)

靴箱

くつばこ

shoe box, shoe shelf

酷烈

こくれつ

severity