堅州国 かたすくに Also written 堅洲国 Meanings Noun underworld; netherworld See also: 根の堅州国 (ねのかたすくに). Kanji 堅 firm. Read as かたい. 州 state 国 country. Read as くに. Words containing 堅州国 根の堅州国 (ねのかたすくに) underworld Jinuma: Japanese Dictionary · Word lists