Definition

A person who does not reply or react to something, such as a message or a treatment.

Example

In a study, the researchers found that a significant number of participants were nonresponders to the new medication.

Conversation

I read an article about the vaccine and its effectiveness.

Oh really? What did it say about nonresponders?

It mentioned that some people just don’t show any immune response at all.

That's interesting; I wonder how common nonresponders actually are.

Synonyms & Antonyms

Root Explanation

Nonresponder → It is formed from "non-" (meaning not) and "responder" (from Latin "respondere", meaning to answer). The word "nonresponder" refers to someone who does not answer or respond.

Memory Tip

Think of 'not' ('non-') answering ('respondere') — that's why a nonresponder is someone who does not answer.

Visually Confused Words