How to pronounce flatness

Noun

• the property of having two dimensions

  Synonyms: two dimensionality

• a want of animation or brilliance

  “the almost self-conscious flatness of Hemingway's style”

• a deficiency in flavor

  “it needed lemon juice to sharpen the flatness of the dried lentils”

• the property of having little or no contrast; lacking highlights or gloss

  Synonyms: matmattmatte

• inactivity; showing an unusual lack of energy

  “the general appearance of sluggishness alarmed his friends”

  Synonyms: lethargysluggishnessphlegm