Back to Thesaurus
Dictionary
Grammar
Thesaurus
Tests
Search
efficacious synonyms
View Definitions
[
UK
/ˌɛfɪkˈeɪʃəs/ ]
[
US
/ˌɛfəˈkeɪʃəs/ ]
Synonyms
effective
efficient
productive
effectual
syn
study at effective
Linguix Browser extension
Fix your writing
on millions of websites
Get Started For Free
Watch how it works
Quiz
Sprint To The Finish With This Olympics Quiz!
Begin the quiz
Words Related To efficacious
efficacious
accumulate
composition
incursion
acrimonious
scuffle
bayou
rampage
fitful
kip
shortsighted