Definitions

1. noun

The state or quality of being flat; lack of depth or curvature.

“The city’s flatness made it difficult to find a scenic view.”

2. noun

The quality of being uninteresting or lacking in excitement.

“The movie’s flatness made it a disappointing experience.”

3. noun

A level or even surface.

“The flatness of the table made it easy to place the vase on it.”