top definitions
explore dictionary

eff.

efficient, efficiency.

effective, effectiveness.

Words nearby eff.

ef-, efa, efate, efavirenz, eff, eff., effable, efface, effect, effecter, effective

Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2020

The
2019 WORD
OF THE YEAR is...