Meaning of INCONSISTENT in English

INCONSISTENT

in ‧ con ‧ sis ‧ tent AC /ˌɪnkənˈsɪst ə nt◂/ BrE AmE adjective

1 . two statements that are inconsistent cannot both be true SYN contradictory OPP consistent :

The accounts of the witnesses are inconsistent.

inconsistent with

His results are inconsistent with our data.

2 . not right according to a particular set of principles or standards OPP consistent

inconsistent with

His conduct was inconsistent with what is expected of a Congressman.

3 . inconsistent behaviour, work etc changes too often from good to bad OPP consistent :

The team’s performance has been highly inconsistent this season.

Longman Dictionary of Contemporary English.      Longman - Словарь современного английского языка.