Squireen is a rather obscure word that refers to a young or minor nobleman in Ireland. However, there are a few synonyms that can be used interchangeably with this term. For instance, the word "squire" is a more commonly used term that refers to a young nobleman or a country gentleman. Other synonyms for squireen include "landowner," "lordling," "aristocrat," "gentleman," and "patrician." These words all refer to someone who holds a position of power or influence in society. While squireen may not be a widely recognized term, understanding its synonyms can help build a more robust vocabulary and deepen one's understanding of different social hierarchies throughout history.