1Jealousy or envy: resentment or discomfort at another's success or fearing that a loved one's attention will go to someone else.
彼の昇進を聞いて、同期の一部は嫉妬した。
Hearing about his promotion, some of his peers felt jealous.
彼女は嫉妬深くて、友達と話すだけで不安になることがある。
She's very jealous and sometimes gets uneasy just when I talk to friends.
嫉妬が原因で二人の関係がぎくしゃくしてしまった。
Jealousy caused friction in their relationship.