When it comes to homosexuality most cultures have older terms and euphemisms for it. I wonder if any culture has similar for aromantic and/or asexual. Have you heard of any?
I suppose some terms for singles, like confirmed bachelor, is kinda related. In Sweden there's also a term "gammelpojk" (=old boy) which meant a man who never married. However because of heteronormavity these terms usually just mean that someone doesn't have an interest in straight relationships.