The Cog Railway brochure promoting the ski trains clearly warns that only the most expert skiers should attempt the trip.

Hayes's hard eyes clearly warned that he was serious.

Parkers need to be clearly warned that they park their vehicles entirely at their own risk.

Lawrence said nothing, but his actions clearly warned, "You're on your own on this one, pal."

Rae's bright smile said she was not offended by Ashley's teasing, but the glint in her eyes clearly warned of retribution.

The officer was back on duty outside the room, and he gave Patrick a look that clearly warned him to stay away.

These are clearly warning shots across the bows of those thinking about protesting.

He tossed her an arrogant look that clearly warned her he was in charge for the moment.

But Mr. Brady is clearly warning every house that might be acting as Salomon was to clean up its act fast.

Now, the very word 'about' clearly warns us that the inscription was probably added some time after the event, but all the available evidence does point toward its veracity.