1. everting the act of turning inside out
  2. averting the act of turning yourself (or your gaze) away
  3. overriding having superior power or influence
  4. overeating eating to excess (personified as one of the deadly sins)
  5. overrating a calculation that results in an estimate that is too high
  6. overheating excessive heating
  7. reverting a failure to maintain a higher state
  8. earthing fastening electrical equipment to earth
  9. overtaking going by something that is moving in order to get in front of it
  10. overacting poor acting by a ham actor
  11. diverting providing enjoyment; pleasantly entertaining
  12. operating involved in a kind of operation
  13. farthing a former British bronze coin worth a quarter of a penny
  14. frothing producing or covered with lathery sweat or saliva from exhaustion or disease
  15. overhang project over
  16. overlying placed on or over something else
  17. every inch in every way; completely
  18. alerting a warning serves to make you more alert to danger
  19. overweening presumptuously arrogant
  20. overreaching revealing excessive self-confidence