under

This word primarily conveys a sense of being beneath or subordinate. In a physical sense, it describes a spatial relationship where one object is covered by or located lower than another. This spatial logic extends to social and professional hierarchies, where it denotes a lack of power or a reporting relationship to a superior.

When used with abstract concepts like pressure, stress, or laws, it indicates a state of being affected by or governed by an external force. In numerical contexts, it serves as a precise marker for values that fall below a specific threshold or limit.