1. labial consonant a consonant whose articulation involves movement of the lips
  2. nasal consonant a consonant produced through the nose with the mouth closed
  3. labiodental consonant a consonant whose articulation involves the lips and teeth
  4. sibilant consonant a consonant characterized by a hissing sound (like s or sh)
  5. poignant keenly distressing to the mind or feelings
  6. dental consonant a consonant articulated with the tip of the tongue near the gum ridge
  7. plosive consonant a consonant produced by stopping the flow of air at some point and suddenly releasing it
  8. alveolar consonant a consonant articulated with the tip of the tongue near the gum ridge
  9. guttural consonant a consonant articulated in the back of the mouth or throat
  10. Hubble constant (cosmology) the ratio of the speed of recession of a galaxy (due to the expansion of the universe) to its distance from the observer; the Hubble constant is not actually a constant, but is regarded as measuring the expansion rate today
  11. consonant a speech sound that is not a vowel
  12. velar consonant a consonant produced with the back of the tongue touching or near the soft palate
  13. voiceless consonant a consonant produced without sound from the vocal cords
  14. stop consonant a consonant produced by stopping the flow of air at some point and suddenly releasing it
  15. indignant angered at something unjust or wrong
  16. pharyngeal consonant a consonant articulated in the back of the mouth or throat
  17. malignant dangerous to health
  18. conscience motivation deriving from ethical or moral principles
  19. consonance a harmonious state of things and of their properties
  20. constant uninterrupted in time and indefinitely long continuing