1. officious intrusive in a meddling or offensive manner
  2. officiating the act of umpiring
  3. offsides illegally beyond a prescribed line or area or ahead of the ball or puck
  4. juxtaposition the act of positioning close together
  5. officiate perform a ceremony or religious ritual
  6. officialize make official
  7. efficiency skillfulness in avoiding wasted time and effort
  8. efficacy capacity or power to produce a desired result
  9. officialise make official
  10. efficient being effective without wasting time, effort, or expense
  11. office boy a young man who is employed to do odd jobs in a business office
  12. juxtapose place side by side
  13. offset a compensating equivalent
  14. officiousness aggressiveness as evidenced by intruding
  15. officialese the style of writing characteristic of some government officials: formal and obscure
  16. avoirdupois a system of weights based on the 16-ounce pound
  17. officiation the performance of a religious or ceremonial or public duty
  18. efficacious giving the power to produce an intended result
  19. official of or relating to a place of business
  20. effaceable capable of being effaced