Definition

In a way that covers a large area or involves a lot of things; widely or thoroughly.

Example

The research was conducted extensively to ensure accurate results.

Conversation

Have you read that book on climate change?

Not yet, but I've heard it covers the topic extensively.

Yeah, I think it’s important to understand it extensively these days.

Absolutely, the more we know, the better we can help.

Synonyms & Antonyms

Root Explanation

Extensively → It is formed from "ex-" (meaning out) and "tendere" (meaning to stretch). The word "extensively" means to stretch out or cover a wide area or scope.

Memory Tip

Think of something that stretches "out" ('ex-') over a large area — that's why extensively means covering a lot.

Visually Confused Words