Definition

Adjective: 1. Extremely sharp; as sharp as a razor's cutting edge: Used to describe an object with a very fine, keen edge capable of precise cutting. 2. Extremely acute, perceptive, or incisive: Used figuratively to describe a person's mind, intellect, or senses that are exceptionally quick, clear, and penetrating. 3. Very clearly defined or delineated: Used to describe something with extremely clear, distinct, and precise boundaries or details.

Usage Examples

• Literal sharpness:
  • The chef's knife was razor-sharp, slicing through the tomato with no effort.
  • He carefully handled the razor-sharp blade of the craft knife.
• Figurative sharpness (mind, senses):
  • The detective had a razor-sharp mind, noticing details everyone else missed.
  • Her razor-sharp wit made her a formidable debater.
• Clear delineation:
  • The telescope provided a razor-sharp image of the lunar surface.
  • The shadow cast by the midday sun was razor-sharp.

Advanced Usage

• "razor-sharp focus": Intense and undivided concentration.
  • The athlete maintained razor-sharp focus throughout the entire competition.
• "razor-sharp precision": Extreme accuracy and exactness.
  • The watchmaker worked with razor-sharp precision.

Variants and Related Words

• Sharp (adj): Having a thin edge or fine point; able to cut or pierce. Also used for quick intelligence or distinct outlines. (A more general term; "razor-sharp" is an intensifier).
• Keen (adj): Sharp; highly developed. Often used for senses (keen eyesight) or intellect (a keen mind).
• Precise (adj): Marked by exactness and accuracy.

Synonyms

• Razor-edged: Having an edge as sharp as a razor.
• Needle-sharp: Extremely sharp, like the point of a needle.
• Incisive: (Figuratively) Intelligently analytical and clear-thinking.
• Acute: (Figuratively) Having or showing a perceptive understanding or insight.

Related Phrases and Idioms

• Sharp as a tack: (Idiom) Very intelligent or quick-witted. Similar to the figurative use of "razor-sharp."
• On the cutting edge: (Idiom) At the forefront of progress or development. Shares the metaphor of sharpness for advancement.

Adjective

1. as sharp as a razor
2. very clearly delineated
   • razor-sharp definition