Japanese edit

Etymology 1 edit

Kitsui (きつい difficult, demanding), kitanai (汚い dirty) and kiken (危険 dangerous).

Noun edit

3K(さんけい) (sankei

  1. (slang) 3D jobs

Etymology 2 edit

Kitsui (きつい difficult, hard), kaerenai (negative potential of 帰る (come home)), kyuryō ga yasui (給料 (salary) (is) 安い (low))

Noun edit

3K(さんけい) (sankei

  1. (slang) a job that is hard, has long hours, and doesn't pay well