Touch wood

Meaning

Knock on wood to avoid tempting fate.

Usage

Used to ward off bad luck after a positive statement.

Origin & History

Origins and dates here are approximate summaries. Many idioms have disputed or unknown origins, and not every date has been checked against a historical dictionary, so treat specific dates and stories as a starting point rather than a citation.

Pagan custom of touching trees believed to house spirits.

Gained traction in British and Irish English.