Tayside is a region situated in Scotland and is home to several beautiful towns and cities such as Dundee, Perth, and Kinross. When it comes to synonyms for Tayside, there are a few options. For example, you could refer to the region as the east central lowlands, which is a broader geographical area that includes Tayside. Another option is to refer to it as the River Tay valley, which is the area that the River Tay runs through. Finally, you could simply refer to it as the county of Angus, which is one of the three counties that make up Tayside.