The word 敢于 (gǎnyú) is formed through the combination of the verb 敢 (gǎn), meaning "to dare" or "to have the courage," and the classical Chinese grammatical particle 于 (yú), which here functions to introduce the object of the action or the goal of the daring. This structure verb + 于 creates a compound that functions as a transitive verb phrase meaning "to dare to (do something)." The particle 于 formalizes and slightly elevates the expression, making 敢于 a more literary or formal equivalent of simply using 敢 before another verb, thus explicitly marking it as "to have the audacity or courage **to undertake** a specific action."