English Expressions: Knock On Wood · Let's Master English

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English Expressions: Knock On Wood

"Knock on wood" is a common idiom or tradition/superstition where people literally knock on a wooden surface to ward off bad luck or to avoid tempting fate after making a hopeful statement.

Origins:

The exact origin is unclear, but there are a few theories:

Ancient Pagan Beliefs – Some cultures believed spirits or gods lived in trees, and knocking on wood was a way to seek protection or give thanks.
Christian Influence – Later, it was associated with the wood of the cross in Christianity, offering divine protection.
Children’s Tag Games – Some suggest it comes from games where touching wood made you "safe."

Modern Usage:

People often say "knock on wood" (and sometimes physically do it) after saying something optimistic to prevent jinxing it.

Example:"I've never been in a car accident—knock on wood!"

It’s mostly a lighthearted habit rather than a serious belief today. Do you use this phrase where you're from? 😊

"I've never had to knock on wood

But I know someone who has

Which makes me wonder if I could

It makes me wonder if I've

Never had to knock on wood

And I'm glad I haven't yet

Because I'm sure it isn't good

That's the impression that I get "