The ones who FLEE...
say they've seen the white walkers.
Game of Thrones Season 1, Episode 3
Flee, you idiot.
Game of Thrones Season 7, Episode 4
And then, when the King turned to FLEE,
Game of Thrones Season 3, Episode 5
or those who learn to FLEE
Westworld Season 2, Episode 9
But if the entire North
has to FLEE to Winterfell,
Game of Thrones Season 7, Episode 3