くるしい
painful, difficult
Old 古 grass 艹 chewed down to the stalk, and your stomach after a third helping. Not sharp pain, just crushed, everything gone wrong in there: くるしい.
難しい むずかしい is difficult to work out. 苦しい is difficult to bear. Near 詳しい くわしい in sound only.
This is one of 1,500 words in Emaki, a free spaced repetition trainer with a written mnemonic on every card.
Study 苦しい in EmakiFree, no account needed. Your progress stays in your browser.
Emaki is not affiliated with, or endorsed by, Kaishi 1.5k or its authors. The word, reading and meaning come from the Kaishi 1.5k deck, used with their permission. The mnemonic, the note and the kanji breakdown are original work, published under CC BY-SA 4.0.