1. definitely without question and beyond doubt
  2. adventitious associated by chance and not an integral part
  3. headphone electro-acoustic transducer for converting electric signals into sounds; it is held over or inserted into the ear
  4. head for the hills flee; take to one's heels; cut and run
  5. stephanotis any of various evergreen climbing shrubs of the genus Stephanotis having fragrant waxy flowers
  6. phonetics the branch of acoustics concerned with speech processes
  7. Elephantopus perennial American herb
  8. adventurous willing to undertake new and daring enterprises
  9. Diophantus Greek mathematician who was the first to try to develop an algebraic notation (3rd century)
  10. headhunter a savage who cuts off and preserves the heads of enemies as trophies
  11. advantageous giving a benefit
  12. adventuress a woman adventurer
  13. head of state the chief public representative of a country who may also be the head of government
  14. Himantopus major one of two genera of stilts
  15. head over heels in disorderly haste
  16. headcount number of people in a particular group
  17. heat of condensation heat liberated by a unit mass of gas at its boiling point as it condenses into a liquid
  18. definiteness the quality of being predictable with great confidence
  19. head count number of people in a particular group
  20. headcounter someone who conducts surveys of public opinion

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