1. office boy a young man who is employed to do odd jobs in a business office
  2. officially in an authoritative role
  3. officious intrusive in a meddling or offensive manner
  4. office place of business where professional duties are performed
  5. officer a member of a police force
  6. efficacy capacity or power to produce a desired result
  7. official of or relating to a place of business
  8. effaceable capable of being effaced
  9. office block a building containing offices where work is done
  10. officiate perform a ceremony or religious ritual
  11. efficient being effective without wasting time, effort, or expense
  12. efficiency skillfulness in avoiding wasted time and effort
  13. efface remove by or as if by rubbing or erasing
  14. affinity a natural attraction or feeling of kinship
  15. offset a compensating equivalent
  16. efficacious giving the power to produce an intended result
  17. office-bearer the person who holds an office
  18. offside (sport) the mistake of occupying an illegal position on the playing field (in football, soccer, ice hockey, field hockey, etc.)
  19. offer up present as an act of worship
  20. officiously in an officious manner