Definition

Having a weakened immune system that makes it difficult for the body to fight off infections and diseases.

Example

People who are immunodeficient are more susceptible to infections.

Conversation

I was reading about how some people are immunodeficient and more susceptible to infections.

Yeah, that sounds really tough for them.

I can’t imagine living like that, always having to be careful.

Definitely. It makes you appreciate good health even more.

Synonyms & Antonyms

Root Explanation

Immunodeficient → It is formed from "immunis" (from Latin, meaning exempt or free from) and "deficere" (from Latin, meaning to fail or to lack). The word describes a state of lacking immunity or being unable to defend against disease.

Memory Tip

Think of being 'exempt' from protection ('immunis') and 'failing' to have enough defenses ('deficere') — that's why immunodeficient means lacking immunity.

Visually Confused Words