noun
barely missing; just missing
Used when someone just misses a person, train, bus, etc. by a narrow margin. Often appears in phrases like 一足違いで会えなかった or 一足違いで乗り遅れた.
彼は一足違いで電車に乗り遅れた。
He missed the train by a hair's breadth.
一足違いで友達に会えなかっ
I just missed my friend.