User blog comment:Xilinoc/Ch. 684 - The Blade/@comment-11446176-20160728131223/@comment-1338810-20160728165621

Stil is German for "style" as in fashion, which would make zero sense except as an ill-timed joke about Uryu's sartorial ventures. Since the arrow stopped Yhwach cold, it's a much better chance that it's "still" as in not moving.