Meanings
From a folk practice of unclear origin.
How to pronounce "knock on wood":
US
AU
To take a customary action to ward off some misfortune that is believed to be attracted by a presumptuous statement.
Hopefully; a self-directive to undertake the customary action to ward off bad luck.
Example: "I do a lot of walking, and I have never had any knee problems yet, knock on wood."
Example Sentences
1
I've never had a car accident *knock on wood*
2
I haven't gotten sick all year *knock on wood*
3
I've never been late to a meeting *knock on wood*
4
I've never had a computer crash *knock on wood*
5
I've never had a flat tire *knock on wood*