I once played a careless move that on first glance flatly gave my opponent the opportunity to take a pawn.

One careless move could cause his star to fall.

One careless move, one stray bullet, and I could lose you.

With one careless move, the ocean would take him, and he was determined not to let that happen.

One careless move and I blow her spine in two.

There was latent power in every careless move he made.

I'm counting on him to make a careless move.

With a graceful, careless move he was gone from the room.

A careless move could get him killed.

One clumsy sweep, one careless move and one of us could kill the other.