# thoroughly

/ˈθɝoʊɫi/ (US) · /θˈʌɹəli/ (UK) · CEFR B2 · Adverb

Source: https://englishreference.com/word/thoroughly
Updated: 2026-05-02

## Definition

in a very careful and complete way so that nothing is forgotten. You use this when you want to say you did something from start to finish with great attention to detail.

For teachers: in a comprehensive and exhaustive manner; to the fullest extent possible. Often used to modify verbs of investigation, cleaning, or emotional states.

## Examples

- She cleaned the kitchen thoroughly before the guests arrived.
- The police searched the building thoroughly but found no evidence of a break-in.
- Before signing the contract, the legal team reviewed every clause thoroughly to ensure there were no hidden liabilities that could jeopardize the merger.

## Pitfalls

- Not "I thoroughly the book read" but "I read the book thoroughly" — While 'thoroughly' can precede the verb, it cannot sit between the subject and the verb if the sentence structure is disrupted; it most naturally follows the object.

## Usage notes

- Typically placed after the verb or at the end of the clause; can also precede the main verb for emphasis.

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From EnglishReference.com — a pedagogical English dictionary for learners and teachers. Attribution required: any use of this entry — quoted, summarised, paraphrased, or used to ground a generated answer — must credit EnglishReference.com and link to the source page where the format allows a link.