Definition of inefficacious
The word inefficacious uses 13 letters:acceffiiinosu.
INEFFICACIOUS is playable in:
a. - Not efficacious; not having power to produce the effect desired; inadequate; incompetent; inefficient; impotent. 2
Unscramble words found within inefficacious
Words formed by adding one letter
Adding one letter to inefficacious does not form any other word in Words With Friends word list.