eff.


efficient, efficiency.
effective, effectiveness.

Nearby words

  1. ef-,
  2. efa,
  3. efate,
  4. efavirenz,
  5. eff,
  6. effable,
  7. efface,
  8. effect,
  9. effecter,
  10. effective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019