Definition

A large, rounded cloud that forms at the top of a thunderstorm, often indicating that a storm is coming.

Example

The sky was filled with dark thunderheads, signaling an approaching storm.

Conversation

Did you see that big thunderhead forming earlier?

Yeah, it looked like a storm was coming our way.

I hope it doesn't rain too hard, though.

Same here! A little thunder is fine, but I don't want to get soaked.

Synonyms & Antonyms

Root Explanation

Thunderhead → It is formed from "thunder" (from Old English "þunor", meaning a loud noise or rumble) and "head" (from Old English "heafod", meaning the top or upper part). The word "thunderhead" refers to a large, towering cloud that produces thunder, resembling the head of thunder itself.

Memory Tip

Imagine a big, towering cloud that looks like the 'head' of thunder, which is why we call it a thunderhead.

Visually Confused Words