knife edge

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knife edge

A chef carefully tests the knife edge on a ripe tomato.

Definition

Noun: 1. The sharp cutting side of a blade: The very thin, sharpened edge of a knife, designed for cutting. 2. A critical or precarious situation: A state of extreme uncertainty or risk, where the outcome is finely balanced. (This is a figurative extension of the primary meaning.)

Usage

The term is primarily used literally to describe the physical part of a knife. Its figurative use describes a tense, finely-balanced state.

Examples: - Literal Use: - The chef carefully honed the knife edge to perfect sharpness. - You should always cut away from yourself to avoid the knife edge.

  • Figurative Use:
    • The patient's life hung on a knife edge after the complex surgery.
    • The election results were on a knife edge, with both candidates nearly tied.
Advanced Usage
  • "on a knife edge": This is the most common idiomatic phrase. It functions as an adverbial phrase meaning in a state of extreme tension or precarious balance.
    • The negotiations were on a knife edge for several days.
    • Her emotions were on a knife edge following the shocking news.
Variants and Related Words
  • Knife-edge (adjective or noun): Often hyphenated, especially when used attributively or as a compound noun.
    • The decision was a knife-edge one. (Adjective)
    • They faced a knife-edge vote in parliament. (Adjective)
  • Razor's edge: A very similar idiom with an identical figurative meaning, emphasizing extreme sharpness and peril.
    • He was living on a razor's edge during his undercover mission.
Synonyms
  • Blade: (for the literal object, though this refers to the whole piece of metal, not just the edge).
  • Brink: (figurative, e.g., on the brink of disaster).
  • Vergе: (figurative, e.g., on the verge of a breakthrough).
  • Precipice: (figurative, suggesting a dangerous fall).
Related Idioms
  • On a knife edge: As detailed above, the primary idiom.
  • Walk a tightrope: Similar figurative meaning, implying a need for careful balance in a risky situation.
    • The diplomat had to walk a tightrope between the two opposing factions.
knife edge

A chef carefully tests the knife edge on a ripe tomato.

Noun
  1. the sharp cutting side of the blade of a knife

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