Definition

In a way that spreads easily or quickly, often used to describe emotions or behaviors that can influence others.

Example

Her laughter was infectiously joyful, making everyone around her smile.

Conversation

I love how she laughs; it’s so infectiously joyful.

Right? You can't help but smile when you hear her.

Exactly! Her energy just makes everything better.

Totally! It's like her happiness spreads to everyone around.

Synonyms & Antonyms

Root Explanation

Infectiously → It is formed from "infect" (from Latin "infectus", meaning to taint or dye) and the suffix "-iously" (meaning in a manner of). The word "infectiously" describes something that spreads or is transmitted in a manner that can affect others, much like a disease spreads.

Memory Tip

Think of something that 'taints' or 'affects' others ('infect') and how it does so 'in a manner of' ('-iously'). This helps you remember that 'infectiously' refers to something that spreads easily.

Visually Confused Words