Click any word in a definition or example to find the entry for that word
This is the British English pronunciation of efficacy.
View American English pronunciation of efficacy.
a type of hairstyle which has a long, thin strip of hair growing down the back of the neck
a country that is ruled by a president or other leader that people vote for, rather than by a...
(of a politician) to be able to communicate and connect with ordinary people
A must for anyone with an interest in the changing face of language. The Macmillan Dictionary blog explores English as it is spoken around the world today.
Pronunciation of efficacy from the online English dictionary from Macmillan Publishers Limited.