埋怨 means 'to blame silently or inwardly' — not openly confronting someone, but feeling and expressing resentment internally or in subdued ways. The character 埋 (mán) here is a special reading (not the common mái), meaning 'to conceal' or 'to suppress', while 怨 (yuàn) means 'resentment' or 'grievance'. Together, they evoke the image of burying one’s grievance — holding it inside rather than voicing it directly. This word carries a sense of quiet disappointment, often tinged with helplessness or self-restraint.

It’s commonly used in interpersonal contexts: family disagreements, workplace frustrations, or unmet expectations where direct confrontation feels inappropriate. Unlike 责备 (to reprimand) or 批评 (to criticize), 埋怨 implies emotional suppression — the speaker may sigh, withdraw, or make passive comments instead of arguing. It frequently appears in spoken Mandarin and narrative writing to reveal inner emotional tension without overt conflict.