1. siren song the enticing appeal of something alluring but potentially dangerous
  2. swan song a final performance or effort (especially before retirement)
  3. sensing becoming aware of something via the senses
  4. Sorensen Danish chemist who devised the pH scale (1868-1939)
  5. rinsing the removal of soap with clean water in the final stage of washing
  6. singsong uttered in a monotonous cadence or rhythm as in chanting
  7. transient lasting a very short time
  8. sneezing a symptom consisting of the involuntary expulsion of air from the nose
  9. transonic (of speed) having or caused by speed approximately equal to that of sound in air at sea level
  10. evensong the sixth of the seven canonical hours of the divine office
  11. birdsong the characteristic sound produced by a bird
  12. sirenian any of two families of large herbivorous aquatic mammals with paddle-shaped tails and flipper-like forelimbs and no hind limbs
  13. patronizing characteristic of those who treat others with arrogance
  14. patronising characteristic of those who treat others with condescension
  15. synchronising an adjustment that causes something to occur or recur in unison
  16. trouncing a sound defeat
  17. diagnosing identifying the nature or cause of some phenomenon
  18. torch song a popular song concerned with disappointment in love
  19. plainsong a liturgical chant of the Roman Catholic Church
  20. synchronizing the relation that exists when things occur at the same time