knock on wood

/nɑk ɒn wʊd/
phrase★Intermediate◆idiom
◆ What It Really Means
To express hope that a positive outcome will not be reversed by bad luck, often after making a positive statement about the future
Literal Meaning
To physically strike a wooden surface with one's hand
Literal Breakdown
knockTo strike something with a quick, sharp blow+onIn contact with a surface+woodThe hard, fibrous material that forms the main substance of the trunk and branches of a tree
◇ Mental Image
The mental image of someone quickly tapping their knuckles against a wooden surface, often accompanied by a hopeful or superstitious expression.
◈ When to Use
A person might say, 'I think I'll get the promotion, knock on wood,' while lightly tapping their desk to avoid tempting fate.
◉ Cultural Note
This phrase is rooted in ancient European superstitions about wood being sacred and capable of warding off evil spirits or bad luck. It became popular in the 20th century in English-speaking countries and is often used in casual conversation to express hope for a positive outcome without tempting fate.
informal

To say or do something while touching wood to avoid 'jinxing' or tempting fate, often after making a positive statement about the future

I think I'll pass my exam this time, knock on wood!

I'm feeling great about my health, knock on wood.

💡

This phrase is often used to express hope that a positive outcome will not be reversed by bad luck.

Synonyms

Antonyms

Related Phrases

jinxidiom
To bring bad luck or to tempt fate
cross your fingersidiom
To hope for good luck

💡Pro Tip

Cultural Context

This phrase is deeply rooted in superstition and is often used in informal settings. It reflects a belief in avoiding bad luck by performing a ritualistic action.

⚡Gold Rule

Usage Rule

Always use this phrase after making a positive statement about the future to express hope that the positive outcome will not be reversed by bad luck.

📖Word Origin

The phrase originates from ancient European traditions where wood was considered sacred and touching it was believed to ward off evil spirits or bad luck. The practice became popular in the 20th century in English-speaking countries.

📝Usage Notes

This idiom is commonly used in casual conversation to express superstition about avoiding bad luck. It is often accompanied by the physical action of knocking on a wooden surface.

Word Breakdown

knock
To strike something with a quick, sharp blow
root
+
on
In contact with a surface
preposition
+
wood
The hard, fibrous material that forms the main substance of the trunk and branches of a tree
root
English Dictionary