See definition of unusable on Dictionary.com

synonyms for unusable

On this page you'll find 104 synonyms, antonyms, and words related to unusable, such as: expendable, futile, idle, impractical, ineffective, and inoperative.

antonyms for unusable

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Roget's 21st Century Thesaurus, Third Edition Copyright © 2013 by the Philip Lief Group.

How to use unusable in a sentence

  • The library would be unusable anyway, while the walls and ceiling were being repaired.

  • Hydrochloric acid in particular will rust them so badly in a single night as to make them unusable unless they are repolished.

    The Decoration of Leather | Georges de Rcy
  • Savile tunnel was blown in in several places, and the Company Headquarters completely cut off and unusable.

  • John was chagrined beyond measure, for he found his tongue an unusable appendage.

    The Cottage of Delight | Will N. Harben

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