Phrases & IdiomsIdiom guide

By the Skin of Your Teeth

“By the skin of your teeth” means succeeding only by a very small margin. It highlights a near failure or narrow escape, and this guide keeps that modern meaning separate from unverified origin chronology.

Quick answer

If you do something “by the skin of your teeth,” you only just manage to succeed.

Key details

Canonical Formby the skin of your teeth
Core Meaningonly just succeeding in doing something or narrowly avoiding failure

Further guidance

History Boundary

This guide publishes the modern dictionary-supported meaning without presenting a specific origin chronology as established fact.

Meaning

The idiom describes success by the narrowest margin—something was achieved, but only just.

Usage Boundary

It is figurative. The expression emphasizes how close the situation came to failure or loss rather than describing an easy success.

Sources and evidence

Sources are shown with the role they play in this guide. Historical or style-sensitive claims are kept within the evidence boundary described above.

  1. By the Skin of Your Teeth — Cambridge Dictionary (opens in a new tab)Cambridge University Press · Current idiom meaning

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