苦杯 (くはい)bitter experience (ordeal)

苦杯, its kanji, and other words that share them.Open this graph

Kanji in 苦杯

苦労くろうtrouble; hardship
苦情くじょうcomplaint; troubles
苦しみくるしみpain; anguish
苦手にがてpoor (at); weak (in)
苦悩くのう(mental) agony; anguish
苦戦くせんhard fight; close game
苦いにがいbitter
苦境くきょうdifficult situation; adverse circumstances
一杯いっぱいamount necessary to fill a container (e.g. cupful, spoonful, etc.); drink (usu. alcoholic)
乾杯かんぱいcheers; bottoms-up
満杯まんぱいfull
杯さかずきsake cup; cup for alcoholic beverages
賜杯しはいEmperor's cup; trophy given by the Emperor
力一杯ちからいっぱいwith all one's strength; with might and main
祝杯しゅくはいtoast; congratulatory cup
精一杯せいいっぱいthe best one can do; one's best effort

See how 苦杯 connects to the rest of Japanese.