咽下 (yàn xià) is a compound verb meaning 'to swallow down' — literally, to move food or liquid from the mouth through the pharynx into the esophagus. The character 咽 here is read yàn (not yān or yè), specifically indicating the act of swallowing; 下 means 'down', emphasizing the downward motion involved in the physical action. Together, they form a directional verb compound where 下 functions as a result complement, indicating completion and direction.

Beyond its literal physiological sense, 咽下 is frequently used figuratively to mean 'to accept or endure something unpleasant without protest', such as criticism, injustice, or disappointment — much like 'swallowing one’s pride' in English. It often carries emotional weight and implies suppression or resignation. It commonly appears in both spoken and written Chinese, especially in narratives describing internal conflict or quiet endurance.