Main entry: phlegm, lethargy, languor, sluggishness, flatness
Definition: inactivity; showing an unusual lack of energy
Usage: the general appearance of sluggishness alarmed his friends
Main entry: lusterlessness, lustrelessness, mat, matt, matte, flatness
Definition: the property of having little or no contrast; lacking highlights or gloss
Main entry: planeness, flatness, two-dimensionality
Definition: the property of having two dimensions
Main entry: flatness
Definition: a deficiency in flavor
Usage: it needed lemon juice to sharpen the flatness of the dried lentils
Main entry: flatness
Definition: a want of animation or brilliance
Usage: the almost self-conscious flatness of Hemingway's style