‘吝音’ is an archaic, literary term meaning 'unwilling to speak' or 'taciturn'—describing someone who holds back words, often out of reserve, suspicion, or emotional restraint. Though composed of 吝 (to begrudge, withhold) and 音 (sound, voice), the compound functions metaphorically: just as one might 'begrudge' material things, here one 'begrudges' speech itself, treating words as scarce or precious.

This expression appears almost exclusively in classical texts, historical novels, or highly stylized modern writing—never in casual conversation or contemporary media. It carries a subtle, somewhat negative connotation of excessive reticence or cold aloofness, distinct from neutral terms like 沉默 (silent) or reserved ones like 内向 (introverted). Its rarity makes it valuable for advanced learners aiming to understand layered register distinctions in Chinese literature and formal discourse.