Something about this word makes us think of armor. As in Knight In Shining. Maybe it’s its Celtic roots, or maybe we’re just silly. Nevertheless, our way of thinking helps us to remember the definition, as stalwart means sturdy, robust, brave, strong, and stout, as well as firm, steadfast, and resolute in nature and opinion. See” Aren’t those adjectives you’d associate with a knight”
Example: Though her family and friends didn’t always agree with her, Sandy was a stalwart supporter of interior design legislation, and she devoted hours to her state’s political lobbying group to further the cause.