Using Office 2011 on Lion is functional but comes with serious modern-world trade-offs.
Running on Lion, Office 2011 offered a polished and responsive experience: Microsoft Office For Mac Os X Lion 10.7.5
If you are looking at this as a requirement for installing software today, please note that this software is End-of-Life (EOL). Using Office 2011 on Lion is functional but
If you cannot find a legitimate copy of Office 2011, or if you prefer software that is slightly more modern, consider these alternatives that work on older Intel Macs: Microsoft Office For Mac Os X Lion 10.7.5