Japanese deck
固い
adjective·n4

かた

Figuratively firm, stiff, or unyielding (e.g., expression, promise, style)

表情ひょうじょうかた

約束やくそくかた

dictionary固いkatai
is hard
negative固くないkatakunai
is not hard
past固かったkatakatta
was hard
past negative固くなかったkatakunakatta
was not hard
te form固くてkatakute
and/so (is) hard
adverb固くkataku
firmly