What is Broad vs Narrow's interpretation of the Constitution?

A broad interpretation of the Constitution would be one that allows a considerable amount of flexibility. A narrow interpretation would tend to interpret the laws in the most literal sense. Anti-Federalists like Thomas Jefferson favored a strict interpretation, and were against loose interpretation because it meant stepping outside the boundaries, and assuming more power than had been granted. The Federalists, on the other hand, favored a more ambiguous interpretation that would allow to the government to assume additional power when needed.