efficaciousness
0 synonyms and 0 antonyms for efficaciousness, grouped by meaning and by how common each one is.
Noun — Quality of being efficacious; efficacy.
We haven't recorded synonyms for efficaciousness yet. You can still read its full definition, where it comes from, or words that rhyme with it.
Etymology
From efficacious + -ness.
Full origin of efficaciousness →