inconsistent

comparative more inconsistent · superlative most inconsistent

1. Not consistent:
   1. Not compatible (with another thing); incompatible, discrepant, at odds.

      His account of the evening was inconsistent with the security-camera footage.

      1 more example

      There was of course no question of admitting that the two texts were in any way inconsistent with each other.

      1978 [1976], Leszek Kołakowski, translated by P[aul] S[teven] Falla, Main Currents of Marxism, volume II: The Golden Age, Oxford: Clarendon Press, translation of Główne nurty marksizmu: rozwój (in Polish), →ISBN, →OCLC, page 464

      Antonyms: consistent

   2. Lacking internal consistency; self-contradicting; not compatible with itself.

      He gave an inconsistent account of the evening, saying he called her before eight, but later that he had not talked to her until after nine.

      1 more example

      He was one of those men of inconsistent politics, governed at once by prejudice and sympathies, whose 'attitude' it is impossible to foretell.

      1862, Robert Aspland, editor, The Christian Reformer

      Synonyms: spotty, mixed · Antonyms: consistent

   3. Not consistent or coherent in thought or behavior.

      “Take him for better or worse,” added Mr. Lee, “and I think he is the strangest and most inconsistent man I ever saw.” “Inconsistent!” resumed Mr. Jones. “He is worse than inconsistent. Inconsistencies may be pardoned as constitutional defects [...]”

      1848, The Columbian Magazine, volume 9, page 88

      Antonyms: consistent

   4. human sciencesHaving the property that a contradiction can be derived.

      Antonyms: consistent