English Dictionary

Define dictionary terms easily in our powerful online English dictionary.

Searching for...

No matching words found

Try a different search term or browse the dictionary

Definition flat out in British English

flat out phrase

phrase
1

as quickly or with as much effort as possible

Example

He worked flat out from morning until night.

Synonyms and related words
Example

Michael said flat out that he didn't believe me.

Synonyms and related words
3

completely and without doubt

Example

He was just flat out wrong.

Synonyms and related words
Definition flat out in British English