just barely; by a very small distance. (The whisker phrase is folksy.) • I just missed getting on the plane by a hair's breadth. • I made it by a hair! • The arrow missed the deer by a whisker.
By a hair's breadth
If a person escapes from some danger by a hair's breadth, they only just managed to avoid it. The breadth is the thickness of a hair, so they probably feel somewhat lucky because the margin between success and what could easily have been failure was so close.
An breadth idiom dictionary is a great resource for writers, students, and anyone looking to expand their vocabulary. It contains a list of words with similar meanings with breadth, allowing users to choose the best word for their specific context.
Dizionario di parole simili, diverso tenore, sinonimi, di invocazione per Idioma breadth