How do I turn on word wrap for column and rows in a matrix visualization?

Hi Anonymous,

Currently, it is not possible to turn on word wrap for column and rows in a matrix.

As stated in this blog, there is a word wrap option for Table column headers in Power BI Desktop.  And Power BI team is working on the feature that add word wrap option in other visuals such as Matrix, you can vote the following ideas about this feature.

https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/6700612-text-wrap-in-tables-cards-etc-in-dashboards
https://ideas.powerbi.com/forums/265200-power-bi-ideas/suggestions/17891074-it-is-fantastic-that-you-instituted-word-wrap-on-t

Thanks,
Lydia Zhang