inconsistent

adjective5

1. •
   Not consistent.
2. •
   Not consistent or coherent in thought or behavior.
3. •
   Not compatible (with another thing); incompatible, discrepant, at odds.

   • His account of the evening was inconsistent with the security-camera footage.
4. •
   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.
5. •
   Having the property that a contradiction can be derived.