noun the property of having two dimensions
noun the property of having little or no contrast; lacking highlights or gloss
noun inactivity; showing an unusual lack of energy
Source: WordNet 3.1, Princeton University
Synonyms for flatness
Other words for “flatness”, grouped by meaning.
We found 11 synonyms for “flatness”. The most common are two-dimensionality, planeness, lusterlessness, lustrelessness, mat.