What term describes powers not explicitly mentioned in the U.S. Constitution?

The term that describes powers not explicitly mentioned in the U.S. Constitution is "Implied Powers." These powers are derived from the Necessary and Proper Clause (also known as the Elastic Clause), which gives Congress the authority to create laws necessary to carry out its enumerated powers. This clause allows for flexibility in the powers of the federal government, indicating that while certain powers are listed, additional powers can be inferred to effectively govern and respond to new challenges.

Reserved Powers refer to those powers that are not delegated to the federal government or prohibited to the states, primarily held by the states themselves. Enumerated Powers, on the other hand, are specifically listed in the Constitution, highlighting the powers granted to the federal government. Concurrent Powers are those shared by both the federal and state governments, such as the power to tax or to build roads. Thus, implied powers represent the broader scope of federal authority that extends beyond the explicitly mentioned powers in the Constitution.