Nearby words

  1. incompact,
  2. incomparability,
  3. incomparable,
  4. incomparably,
  5. incompatibility,
  6. incompetence,
  7. incompetency,
  8. incompetent,
  9. incomplete,
  10. incomplete abortion

Origin of incompatible

From the Medieval Latin word incompatibilis, dating back to 1555–65. See in-3, compatible

SYNONYMS FOR incompatible
1. unsuitable, unsuited. See inconsistent. 1, 2. inharmonious. 2. contradictory.

Related formsin·com·pat·i·bil·i·ty, in·com·pat·i·ble·ness, nounin·com·pat·i·bly, adverb Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019

Examples from the Web for incompatibility

British Dictionary definitions for incompatibility



incapable of living or existing together in peace or harmony; conflicting or antagonistic
opposed in nature or quality; inconsistent
(of an office, position, etc) only able to be held by one person at a time
med (esp of two drugs or two types of blood) incapable of being combined or used together; antagonistic
logic (of two propositions) unable to be both true at the same time
(of plants)
  1. not capable of forming successful grafts
  2. incapable of fertilizing each other
maths another word for inconsistent (def. 4)


(often plural) a person or thing that is incompatible with another
Derived Formsincompatibility or incompatibleness, nounincompatibly, adverb

Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Word Origin and History for incompatibility
Online Etymology Dictionary, © 2010 Douglas Harper

Medicine definitions for incompatibility




Incapable of associating or blending or of being associated or blended because of disharmony, incongruity, or antagonism.
Producing an undesirable effect when used in combination with a particular substance, as a medicine in combination with alcohol.
Not suitable for combination or administration because of immunological differences, as blood types.
Related formsin′com•pat•i•bili•ty (ĭn′kəm-păt′ə-bĭlĭ-tē) n.

The American Heritage® Stedman's Medical Dictionary Copyright © 2002, 2001, 1995 by Houghton Mifflin Company. Published by Houghton Mifflin Company.