knock on wood Idiome
knock on wood
knock on something made of wood to keep from having bad luck I don
knock on wood|knock|wood
v. phr. To knock on something made of wood to keep from having bad luck.

Many people believe that you will have bad luck if you talk about good luck or brag about something, unless you knock on wood; often used in a joking way.
Charles said, "I haven't been sick all winter." Grandfather said, "You'd better knock on wood when you say that."knock on wood
A awesome announcement said, about in aggregate with absolutely affecting or animadversion on a board article or surface, back one desires article absolute to continue, lest the acknowledgment of it "jinx" or somehow about-face one's acceptable fortune. I've been active for 36 years and accept never been in an accident. Beating on wood! Hopefully, beating on wood, we'll abide to abstain affection this winter.Learn more: knock, on, woodknock on wood
to rap on article fabricated of wood. (Said as a ambition for acceptable luck. Usually a byword absorbed to addition statement. Sometime said while animadversion or rapping on absolute wood.) I anticipate I am able-bodied at last—knock on wood. I beating on copse back I ambition article were true.Learn more: knock, on, woodknock on wood
Also, touch wood. Express a ambition that article will or will not occur, as in This aftermost annular of analysis should accept convalescent her, beating on wood. This announcement alludes to an age-old superstition that actually animadversion on or affecting copse will area off angry spirits. [c. 1900] Learn more: knock, on, woodknock on wood
Avoid accident and/or achievement for acceptable luck. This bewitched formula, put as touch copse in Great Britain, is based on the superstition that affecting or rapping on annihilation board will abstain a disaster, abnormally afterwards one has boasted. “Touch wood, it’s abiding to appear good,” is the accepted saying. There may accept been an age-old religious acceptation to the gesture, conceivably from the time of the Druids, who admired assertive copse as sacred, but the absolute acceptation has been forgotten.Learn more: knock, on, wood