English Reference
noun

sharpness

n.
US /ˈʃɑɹpnəs/ UK /ʃˈɑːpnəs/ sharp·ness UK spelling sharpnesses

  1. 01 B2 Upper Intermediate

    how well a tool like a knife or scissors can cut through things.

    the cutting ability of an edge or the keenness of a blade.

    Simple

    He tested the sharpness of the kitchen knife by slicing a tomato.

    In context

    The chef insisted on maintaining the sharpness of his carbon-steel blades through daily honing on a fine-grit whetstone.

    keennessedge
    dullnessbluntness
  2. 02 B2 Upper Intermediate

    how clear and easy to see the details in a picture or photo are.

    the degree of distinctness or focus in an image or sensory perception.

    Simple

    The sharpness of the photo was amazing even when I zoomed in.

    In context

    Digital post-processing can enhance the perceived sharpness of a photograph, though it cannot recover details lost to poor lens focus.

    blurrinessfuzziness
  3. 03 C1 Advanced Formal

    the ability to think quickly and understand difficult ideas.

    acuteness of mind or the ability to perceive and understand subtle distinctions.

    Simple

    Even at ninety years old, her mental sharpness was impressive.

    In context

    The cross-examination required a high degree of mental sharpness to identify the inconsistencies in the witness's testimony.

    stupidityslowness
  4. 04 B2 Upper Intermediate Cooking

    a strong, sour, or stinging taste or smell.

    the quality of being pungent, acidic, or biting to the senses of taste or smell.

    Simple

    The sharpness of the lemon juice balanced the sweet cake.

    In context

    Aged cheddar is prized for a characteristic sharpness that develops during the long fermentation process.

    pungencyaciditytartness
    mildnessblandness
  5. 05 C1 Advanced Literary

    a quality in someone's voice or words that sounds angry or unkind.

    the quality of being harsh, biting, or severe in speech or manner.

    Simple

    She was surprised by the sharpness in his voice when he answered.

    In context

    The critic's review was noted for its unnecessary sharpness, attacking the author's character rather than the work itself.

    severityharshnessacerbity

From Middle English sharpnesse, scharpnesse, from Old English sċearpnes (“sharpness”), equivalent to sharp + -ness.

Etymology adapted from Wiktionary, available under CC BY-SA 4.0.

This entry
Origin Old English sċearpnes
Level B2 · Upper Intermediate
Frequency Occasional
Updated