IPA: /ˌɪn.kəm.pæt.əˈbɪl.ɪ.ti/
KK: /ɪnˌkɒmpətəˈbɪləti/
The condition where two things cannot exist or work together because they are too different or opposed to each other.
The incompatibility between their personalities made it difficult for them to be friends.
Incompatibility → It is formed from "in-" (meaning not) and "compatibilis" (from Latin, meaning able to exist together). The word describes a state where two or more things cannot coexist harmoniously or are not suitable for each other.
Think of 'not' ('in-') being able to 'exist together' ('compatibilis') — that's why incompatibility means things that cannot work well together.