Imagine Li Wei, a talented but modest calligrapher whose friend Xiao Mei just won the National Art Prize. When Li Wei sees her trophy gleaming on social media, he doesn’t feel joy — he feels a tight, sour heat in his chest, a quiet resentment that makes him scroll past her posts faster than usual. That’s 妒 (dù): not just ‘envy’ like English, but a morally charged, inward-facing *bitter envy* — often tinged with shame or self-reproach. It’s never neutral: saying ‘I’m envious of your promotion’ in Chinese requires softening (e.g., 羡慕), because 妒 implies you’re letting envy corrode your heart.

Grammatically, 妒 is almost always a verb, used reflexively or transitively: she *feels* 妒 (她很妒), or she *is envious of* someone (妒忌他). Note: it rarely stands alone — it’s nearly always paired with 忌 in the compound 妒忌 (dùjì), especially in formal or literary contexts. Learners mistakenly use 妒 as a noun (‘her envy’) or try to say ‘I’m jealous’ directly with 妒 — but native speakers would say 我有点妒忌他 or 更多是羡慕, not *我妒他.

Culturally, 妒 carries Confucian weight: it’s one of the ‘seven emotions’ (七情) linked to moral failing — unlike 羡慕 (admiring envy), 妒 suggests a loss of virtue and self-control. In classical texts like the *Book of Rites*, unchecked 妒 is condemned as socially disruptive, especially among women (hence the 女 radical). Modern usage still leans negative: you’ll see it in news headlines about political rivals or workplace sabotage — never in a birthday card!