forgetful
🇺🇸
/fərˈɡetfl/
🇬🇧
/fəˈɡetfl/
often forgetting things
My forgetful grandmother always loses her keys.
私の忘れっぽい祖母はいつも鍵をなくします。
not thinking about someone or something you should remember
He was forgetful of his promises and didn't keep them.
彼は自分の約束を忘れて、それを守りませんでした。