支援 (zhī yuán) is a verb meaning 'to aid' or 'to render assistance,' often in contexts requiring active, organized, or substantial support — such as during emergencies, humanitarian efforts, or professional collaboration. The character 支 (zhī) means 'to support' or 'to prop up,' suggesting structural or foundational help; 援 (yuán) means 'to assist' or 'to rescue,' carrying connotations of timely intervention. Together, they emphasize purposeful, often institutional or collective action rather than casual help.

This word is commonly used in formal or semi-formal settings: government announcements, news reports, medical campaigns, or workplace coordination. It implies the supporter has resources (time, personnel, equipment, expertise) to deploy, and the recipient faces a challenge beyond ordinary capacity. While it can appear in everyday speech (e.g., helping a colleague meet a deadline), it rarely describes small, personal favors — for those, 帮忙 (bāng máng) or 帮助 (bāng zhù) are more natural.