Definition

In a complete and detailed way, leaving no part out.

Example

She cleaned the house thoroughly before the guests arrived.

Conversation

Did you finish the report for class yet?

Not yet, but I'm going to go through it thoroughly tonight.

That's a good idea; it will help you catch any mistakes.

Exactly! I want to make sure it's thoroughly done before submission.

Synonyms & Antonyms

Root Explanation

Thoroughly → It is formed from "thorough" (from Old English *þurh*, meaning through) and the suffix "-ly" (meaning in a manner of). The word "thoroughly" means in a manner that is complete or through, indicating that something is done with great attention to detail.

Memory Tip

Think of doing something 'through' ('þurh') and in a specific way ('-ly') — that's why thoroughly means doing something completely and with care.

Visually Confused Words