cross your fingers

cross your fingers

Hope for good luck or that something will happen. The actual gesture, which does not have to accompany the phrase, involves crossing one's middle finger over the index finger as a superstition believed to bring good luck or ward off bad luck. OK, I'm going to turn on the machine for the first time. Here goes—cross your fingers, everyone!
See also: cross, finger
Farlex Dictionary of Idioms.

cross your fingers (or keep your fingers crossed)

hope that your plans will be successful; trust in good luck.
The gesture of putting your index and middle fingers across each other as a sign of hoping for good luck is a scaled-down version of the Christian one of making the sign of the Cross with your whole hand and arm as a request for divine protection. It is also superstitiously employed when telling a deliberate lie, with the idea of warding off the evil that might be expected to befall a liar.
1998 Spectator Since resources were limited … the only hope the clients had was to hang in there, fingers crossed.
See also: cross, finger
Farlex Partner Idioms Dictionary
See also:
  • cross (one's) fingers
  • cross one's fingers
  • keep (one's) fingers crossed
  • keep fingers crossed
  • keep your fingers crossed
  • have (one's) fingers crossed
  • have/keep your fingers crossed
  • tag along after (someone)
  • tag along behind (someone)
  • come with (someone or something)
References in periodicals archive
Take a dolphin-viewing cruise--and cross your fingers.
Cross your fingers and hope the Eiffel Tower still stands after Stu Pickles, Tommy, Chuckle, Angelica, Lil, Phil, Baby Dil and Didi bead to the City of Lights.
The actress is backing the Kit Kat Cross Your Fingers campaign, which was launched by Sir Geoff Hurst and a host of other patriotic celebrities.
You just have to cross your fingers and hope she keeps her mouth shut.
Cross your fingers and hope no one listens to party animal Christian's plan of action.
Time to cross your fingers - and in future, your legs as well.
So cross your fingers because today we're dreaming of what would be a truly glorious summer success.
Cross your fingers that Audi builds it - not that it will be cheap.