1. worsted a tightly twisted woolen yarn spun from long-staple wool
  2. fastidious giving careful attention to detail
  3. first aid emergency care given before regular medical aid can be obtained
  4. first cause an agent that is the cause of all things but does not itself have a cause
  5. first base the base that must be touched first by a base runner in baseball
  6. osteitis inflammation of a bone as a consequence of infection or trauma or degeneration
  7. first team a team representing a college or university
  8. forested covered with forest
  9. frostweed perennial of the eastern United States having early solitary yellow flowers followed by late petalless flowers; so-called because ice crystals form on it during first frosts
  10. frosted (of glass) having a roughened coating resembling frost
  11. oersted the magnetic field strength 1 cm from a unit magnetic pole
  12. Oersted Danish physicist (1777-1851)
  13. Orestes the son of Agamemnon and Clytemnestra
  14. at odds in disagreement
  15. first water the highest quality gems
  16. rusty woodsia a common rock-inhabiting fern of northern temperate regions having rusty-brown stipes and lanceolate pinnate fronds
  17. worst the least favorable outcome
  18. Aristotle one of the greatest of the ancient Athenian philosophers
  19. foresightedness providence by virtue of planning prudently for the future
  20. worsted yarn a tightly twisted woolen yarn spun from long-staple wool