Hard-edged is a term used to describe someone or something that has a sharp or uncompromising point of view. There are many synonyms which can be used instead of the term hard-edged, some of these synonyms include uncompromising, rigid, inflexible, unyielding or fixed. Other words that can be used to describe a hard-edged personality or thing include stern, severe, strict, adamant, and unbending. However, it's important to note that while these words may have similar meanings, they are not necessarily interchangeable, and using the wrong word could lead to a different interpretation of the subject in question.