noun
A loanword from English, used in Japanese to refer to romantic or emotional jealousy, often with a slightly modern or stylish nuance compared to native terms like 嫉妬 (しっと).
彼の女友達にジェラシーを感じる。
I feel jealousy toward his female friend.
ジェラシーが原因で喧嘩になった。
They had a fight because of jealousy.