Definitions

from The American Heritage® Dictionary of the English Language, 5th Edition.

  • adjective Having or showing no regard for what is right or honorable; devoid of scruples.

from The Century Dictionary.

  • Not scrupulous; having no scruples; regardless of principle; unprincipled.

from the GNU version of the Collaborative International Dictionary of English.

  • adjective Not scrupulous; unprincipled.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

  • adjective Without scruples, immoral
  • adjective Contemptuous of what is right or honorable

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

  • adjective without scruples or principles

Etymologies

from Wiktionary, Creative Commons Attribution/Share-Alike License

un- +‎ scrupulous

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Examples

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  • djective: without scruples or principles

    In the courtroom, the lawyer was unscrupulous, using every manner of deceit and manipulation to secure a victory for himself.

    October 19, 2016