Idiom B1 Informal

Turn over a new leaf

To change your behaviour for the better; to make a fresh start

Meaning

Turn over a new leaf — To change your behaviour for the better; to make a fresh start and leave bad habits, mistakes, or a difficult period behind.

Origin & History

The phrase dates from the 16th century. In early modern English, leaf referred to a page of a book — not a leaf from a tree. Turning to a fresh, blank page symbolised the idea of starting something new. By the 1500s the expression was already being used figuratively to mean personal renewal. Over the following centuries it shifted fully towards the sense of moral or behavioural improvement that it carries today.

Example Sentences

SentenceContext
He decided to turn over a new leaf and start exercising every morning.Personal health resolution
After getting out of prison, she was determined to turn over a new leaf.Life after a difficult period
The new year is a great time to turn over a new leaf and break old habits.New Year's resolution
His teacher said she hoped he would turn over a new leaf this term.School improvement
They moved to a new city partly to turn over a new leaf as a family.Fresh start in a new place
I know I've made mistakes, but I really want to turn over a new leaf.Personal admission and commitment to change

How to Use It

Neutral to informal. Common in everyday spoken English, personal stories, self-help writing, and news articles about personal change or second chances. It pairs naturally with verbs like decide to, want to, try to, and promise to. You can use it in the past, present, or future tense without changing the core phrase.

Common Mistakes

Mistakes to Avoid

She turned over the new leaf after her mistake.

She turned over a new leaf after her mistake. — Always use the indefinite article 'a', not 'the'.

He turned a new leaf at work.

He turned over a new leaf at work. — Do not drop 'over'; the full three-word phrase is required.

They turned over a new leave.

They turned over a new leaf. — 'Leaf' means page here, not a tree leaf or the verb 'leave'.

Similar Idioms

Make a fresh start Back to square one Water under the bridge Wipe the slate clean All Idioms →

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Frequently Asked Questions

What does "Turn over a new leaf" mean?
"Turn over a new leaf" means to change your behaviour for the better and make a fresh start. It describes someone who decides to leave bad habits, mistakes, or a negative period behind and begin again with improved behaviour or attitude.
Where does the idiom "Turn over a new leaf" come from?
The phrase dates from the 16th century. In early modern English, "leaf" meant a page of a book — not a leaf from a tree. Turning to a fresh, blank page in a book symbolised starting something new. Over time the expression evolved to mean personal improvement and positive change.
Can you give an example of "Turn over a new leaf" in a sentence?
Here is an example: "He decided to turn over a new leaf and start exercising every morning." — used when someone commits to a positive change in behaviour.
Is "Turn over a new leaf" formal or informal?
This idiom is neutral to informal. It is common in everyday speech, personal stories, and informal writing. It can also appear in motivational contexts, self-help texts, and news articles about personal change.
What CEFR level is "Turn over a new leaf"?
This idiom is typically taught at B1 level. It is a mid-intermediate expression that appears frequently in spoken English and everyday written texts, making it useful for learners who want to sound natural.
What are common mistakes with "Turn over a new leaf"?
A common mistake is confusing "leaf" with a tree leaf and changing the idiom. Another error is using the wrong article — the correct form always uses "a new leaf", not "the new leaf". Also, do not drop the word "over": "turned a new leaf" is incorrect. The correct form is: "turned over a new leaf".
What idioms are similar to "Turn over a new leaf"?
Similar idioms include: Make a fresh start, Start from scratch, Wipe the slate clean, and Draw a line under something. These all share the idea of leaving the past behind and beginning again, though they differ slightly in emphasis.
How do I practise idioms like "Turn over a new leaf"?
LexFizz's Flip Tiles and Flash Cards exercises are great for practising English idioms. Try writing your own example sentences using the idiom in different tenses, and listen for it in podcasts, films, and conversations about personal change.
Can "Turn over a new leaf" be used in writing?
Yes. This idiom works well in informal writing, personal statements, diaries, and journalistic pieces about change or second chances. It sounds natural in motivational or narrative contexts. Avoid it in formal academic writing, where a more direct phrase such as "improve one's behaviour" would be more appropriate.
Does "Turn over a new leaf" have the same meaning in British and American English?
Yes, "turn over a new leaf" is understood in both British and American English with the same meaning: to change your behaviour for the better and make a fresh start. The idiom is widely recognised across all major varieties of English.