What does 妬む mean?
妬む is a Japanese verb meaning “to be jealous, to be envious” in English. It is written as 妬む in kanji, ねたむ in hiragana, and netamu in romaji. This word is part of JLPT N1 vocabulary.
Example sentence
彼は君の成功をねたんでいる。
He begrudges you your success.