irreconcilable differences

phrase

formal

: inability to agree on most things or on important things

They are filing for divorce, citing irreconcilable differences.

Legal Definition

irreconcilable differences

noun plural but singular or plural in construction

ir·​rec·​on·​cil·​able dif·​fer·​enc·​es

ir-ˌre-kən-ˈsī-lə-bəl-

: substantial incompatibility between marriage partners that is a broad ground for especially no-fault divorce compare irretrievable breakdown of the marriage