Doesn't look like it, and this seems to be a highly non-trivial problem, too, even if you keep yourself to English (perhaps especially English, since English has some really bizzare rules). So the plural form of "car" is "cars", right? How about "virus"? Is that "virii" or "viruses"? (Major flame war item there). Some programmer communities plurlize "regex" as "regexen", not "regexes". So this isn't just language-specific, but culture-specific, too.