足あしを滑すべらす

expression, godan verb (-su)

lose one's footing; slip

Used when someone physically slips or loses their footing, often on a slippery surface.

• 雨あめの日ひは、階かい段だんで足あしを滑すべらすことがある。

  On rainy days, I sometimes slip on the stairs.

• 凍こおった道みちで足あしを滑すべらして転ころんだ。

  I slipped on the icy road and fell.