The word **不屈 (bùqū)** is a classical Chinese compound formed by combining the negation adverb **不 (bù)**, meaning "not," with the verb **屈 (qū)**, which means "to bend," "to submit," or "to yield." Literally, it translates to "not bending" or "not submitting." This literal sense of physical or metaphorical inflexibility evolved into its modern figurative meaning, describing an **unyielding, indomitable, or unbreakable spirit** in the face of pressure, adversity, or coercion. It is a paradigmatic example of how Chinese compounds often create abstract qualities by logically combining concrete conceptual components.