Efficacious suggests a practical, positive outcome; it emphasizes on achieving goals. Her study method was efficacious for learning new languages quickly.
Pro Tip 2/3
Not Automatic
Efficacious doesn’t mean instant success, it implies effectiveness through effort or design. Regular exercise is efficacious for maintaining good health.
Pro Tip 3/3
Positive Connotation
Unlike 'effective', which is neutral, 'efficacious' often has a positive tone. The new teaching strategy was more than effective; it was efficacious.