Paly ... loitering?

I’m playing Lexulous with bup and just pissed him off by playing PALY onto a triple-word score. Okay, it might’ve been the double-letter score that the P was on, who knows.

Anyway, I knew the word because it’s in a poem. Or something. Probably 19th century. I’d thought it was “something something paly loitering,” maybe about a knight … or a maiden? Google ain’t cooperating – anyone know what’s niggling at my brain?

John Keats’s “La Belle Dame Sans Merci,” but I’d spell it “palely.”

Yup, that’s it, thanks!

And yet the game insists MYSTERIED is not a word.

Stupid game.