incompatible
adjective
uk/ˌɪnkəmˈpætəbl/ usso different that both cannot happen, be correct, or be accepted at the same time:
The aims of the two partners were so fundamentally incompatible that an outside arbitrator was called in.
incompatible with sth She argued that his outside interests were incompatible with his role as team leader.
IT
not able to work with other equipment:
The file was in an incompatible format and could not be printed.
incompatible with sth Ethernet and RJ11 adapters are incompatible with each other.
HR
not able to work well with someone or within a company:
Human resources found the two managers to be mutually incompatible.