Definition

Able to be passed from one person to another, especially in the case of diseases or infections. It can also refer to something that spreads easily, like a smile or laughter.

Example

The flu is highly contagious, so it's important to wash your hands frequently.

Conversation

Did you hear that laughter can be contagious?

Really? I never thought about it that way!

Yeah, when people laugh, it makes others want to join in.

That makes sense! A good laugh is definitely contagious.

Synonyms & Antonyms

Root Explanation

Contagious → It is formed from "con-" (meaning together) and "tangere" (meaning to touch). The word describes something that can be transmitted by touch or contact, particularly in the context of diseases.

Memory Tip

Think of something that spreads when people are 'together' ('con-') and 'touch' ('tangere') each other — that's why contagious refers to diseases that can be passed on through contact.

Visually Confused Words