It suggests a roundness and fullness of figure, often associated with good health and prosperity. While the term itself isn't inherently negative, it can sometimes be used as a euphemism for overweight.
Here are some examples:
* "The portly gentleman in the corner booth was enjoying a hearty meal."
* "The portly queen was known for her lavish feasts."
* "The portly man chuckled as he adjusted his belt."
It's important to note that while portly can be used to describe someone who is overweight, it's generally considered a more polite and less judgmental term than "fat" or "obese."