增强 is a transitive verb meaning 'to strengthen' or 'to enhance' — it describes the action of making something more powerful, effective, or resilient. The first character 增 (zēng) means 'to increase' or 'to add', while 强 (qiáng) means 'strong' or 'powerful'; together, they convey the idea of actively boosting strength or capability. It is commonly used in formal and semi-formal contexts, especially when discussing health, skills, systems, or relationships.

This word often appears with abstract nouns as its object: for example, 增强免疫力 (strengthen immunity), 增强信心 (boost confidence), or 增强合作 (enhance cooperation). It implies intentional effort and measurable improvement, not just a temporary effect. While it can occasionally modify nouns attributively (e.g., 增强效果), it functions primarily as a verb and rarely as a noun. It carries a positive, constructive connotation and is frequently seen in news reports, health advice, educational materials, and policy documents.