1. the state of being unable to exist or work together without conflict or difficulty
2. a difference in personality, values, or interests that prevents two people from having a successful relationship
3. the inability of two things (such as software, devices, or substances) to function properly together
Usage: technical

Examples

• The incompatibility between their work schedules made it difficult for them to spend time together.
• Their fundamental incompatibility in values led to the end of their marriage.
• The software incompatibility prevented the new program from running on the older computer.
• There was an incompatibility between what the client wanted and what the designer could deliver.
• The two chemicals showed incompatibility and could not be mixed safely.
• Their incompatibility became obvious after just a few weeks of dating.
• The system reported an incompatibility error when trying to install the update.