We were lucking out when the rain stopped just as we set up the picnic.

We lucked out with the weather during our hike, so we stayed dry the whole time.

At the final hour, Lady Luck smiled upon the underdogs and they staged an incredible comeback.

I packed an extra charger and, with any luck, my phone will last the whole trip.

For the office holiday party, everyone signed up to bring something to the pot-luck.

We're organizing a pot luck this weekend; please sign up for what you'll bring.

I was out of luck after my umbrella blew away just before the rain started.

Getting a flat tire right before the interview was just hard luck.

When the power outage ruined their presentation, they blamed bad luck for the loss.

hard luck — you worked so hard, but the show was canceled at the last minute.