Inefficacy: meaning, definitions and examples

lack of effectiveness

Inefficacy refers to the state or quality of being ineffective or not producing the desired result. It is the opposite of efficacy, which is the ability to produce a desired or intended result. Inefficacy can be observed in various aspects of life, such as in the failure of a medication to treat a disease effectively or in the inefficacy of a government policy to address a social issue.

failure, ineffectiveness, lack of efficacy

Examples of usage

• The inefficacy of the new drug in treating the disease was disappointing.

• The inefficacy of the security measures led to a breach in the system.

• The inefficacy of the current educational system is a cause for concern.