1Bitter — a sharp, unsweet taste like coffee or medicine; also used metaphorically for painful or unpleasant experiences.
このビールは少し苦いけど、好きだ。
This beer is a bit bitter, but I like it.
子供の頃、ピーマンが苦くて食べられなかった。
When I was a kid, I couldn't eat green peppers because they tasted bitter.
その一言は彼にとって苦い記憶として残った。
That remark stayed with him as a bitter memory.
失敗を苦い経験として次に生かしたい。
I want to use the failure as a bitter lesson for next time.