Efficacious is an adjective used to describe having the power to produce a desired result or effect. Effective as a means, measure, remedy, strategy, plan.
- Sometimes taking a break and focusing your mind on something else, can be a ‘efficacious’ way of finding the answer to your problems.
- Wearing glasses is in fact not an ‘efficacious’ way of looking after your eyesight.
- The treatment was ‘efficacious’ in diagnosing the illness.