adjective un·con·scio·na·ble \ ˌən-ˈkän(t)-sh(ə-)nə-bəl \
Updated on: 6 May 2018

Definition of unconscionable

1 a : shockingly unfair or unjust
  • unconscionable sales practices
b : excessive, unreasonable
  • found an unconscionable number of defects in the car
2 : not guided or controlled by conscience : unscrupulous
  • an unconscionable villain


play \ˌən-ˌkän(t)-sh(ə-)nə-ˈbi-lə-tē\ noun


play \ˌən-ˈkän(t)-sh(ə-)nə-bəl-nəs\ noun


play \ˌən-ˈkän(t)-sh(ə-)nə-blē\ adverb

Examples of unconscionable in a Sentence

  1. They have had to endure unconscionable delays.

  2. an unconscionable number of errors for an important government report

Recent Examples of unconscionable from the Web

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unconscionable.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

When Do You Use unconscionable?

Something that can't be done in good conscience is unconscionable, and such acts can range from betraying a confidence to mass murder. For a five-syllable word, unconscionable is actually quite common. This is partly because it isn't always used very seriously; so, for example, a critic is free to call a fat new book "an unconscionable waste of trees". In law, an unconscionable contract is one that, even though it was signed by both parties, is so ridiculous that a judge will just throw it out.

First Known Use of unconscionable


in the meaning defined at sense 2

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UNCONSCIONABLE Defined for English Language Learners


Definition of unconscionable for English Language Learners

  • : extremely bad, unfair, or wrong

  • : going far beyond what is usual or proper

Law Dictionary


adjective un·con·scio·na·ble \ ˌən-ˈkän-chə-nə-bəl \

legal Definition of unconscionable

: unreasonably unfair to one party, marked by oppression, or otherwise unacceptably offensive to public policy
  • an unconscionable clause
  • finds the contract…to have been unconscionable at the time it was made
  • Uniform Commercial Code
— compare conscionable



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