uncontroversial
🇺🇸
/ˌʌnkɑːntrəˈvɜːrʃl/
🇬🇧
/ˌʌnˌkɒntrəˈvɜːʃl/
Something that doesn't cause arguments or disagreements between people.
The teacher chose an uncontroversial topic for the class debate to avoid arguments.