Definition

The condition of not being able to achieve a desired result or effect.

Example

The inefficacy of the new policy led to many complaints from the community.

Conversation

Have you noticed the inefficacy of our current plan?

Yeah, it really doesn't seem to be working at all.

It's frustrating because we put so much effort into it.

Maybe we should rethink our approach to get better results.

Synonyms & Antonyms

Root Explanation

Inefficacy → It is formed from "in-" (meaning not) and "efficax" (from Latin, meaning effective or able to produce a desired effect) and the suffix "-cy" (meaning the state or condition of). The word "inefficacy" refers to the state of being not effective or the inability to produce a desired effect.

Memory Tip

Think of 'not' ('in-') being combined with 'effective' ('efficax') to remember that 'inefficacy' means the state of not being effective.

Visually Confused Words