Phlegmatic

a.
  1. Watery.
  2. Abounding in phlegm; as, phlegmatic humors; a phlegmatic constitution.
  3. Generating or causing phlegm.
  4. Not easily excited to action or passion; cold; dull; sluggish; heavy; as, a phlegmatic person.
    5. Phlegmatic temperament (Old Physiol.),
    lymphatic temperament. See under Lymphatic.