"The handsome thing" can be described in many different ways, using synonyms that range from debonair to dashing. Other synonyms that could be used include gallant, suave, charming, attractive, alluring, captivating, enchanting, and even striking. The use of these synonyms provides a more diverse and precise description of the object in question, be it a person or a tangible object. It's essential to use these synonyms to avoid repetition of the same description multiple times and add more depth to one's writing. Ultimately, the use of synonyms for "the handsome thing" provides a more elegant and enriched description.