But as you can see from the opening sentences, the matter of how to use and when to use "yourself" compared with "theirself" or "themself" (complete with spellcheck's squiggly red underscore) can become problematic. Sometimes it's easier to go the long way around and just say "they did it on their own" or "they did it to their own self," which, admittedly, becomes a bit cumbersome. All that work to say something simple about "them."
So here's the skinny from Dictionary.com.
About "Theirself"
According to Dictionary.com, "theirself is the nonstandard variant of (what else?) "themself." Its usage comes from 13th Century Middle England and is an informal usage, i.e., spoken by the common folk; not necessarily proper English. Have we spent enough time on this part of the exercise?
Checking the Sources
It's useful to check the guidelines about use and usage before jumping into the middle of the ocean. After all, you want to know you'll have good footing or an easy way to swim. In this regard, I did a bit of research for you who (like me) were wondering about this and gaining way more gray (which way to spell that, with an "e" or an "a"?) hair than you deserve. With a search string that queried the principles of usage between the two words (themselves compared with theirselves), an avalanche hit me.
These words are considered reflective pronouns. Writing Explained (WE) tells us not only do these reflective pronouns talk about what's being done, they also emphasize who is doing it. (Hint: According to Stack Exchange, it means the speaker is doing it to their own self. A bit like self flagellation, e.g., he was flogging himself.) EX: The class took theirselves to the bistro. Who did this? The class. what did they do? They took themselves, and no one else. (Maybe it was a private party.) One example WE gives is the classic "Please CC myself and Donna on the email." That was one of the grammar lessons from Third Grade. The speaker comes last in the enumeration. Fortunately, that phrasing is noted as being "nontraditional" (ahem) and the correct phrasing (called more graceful) is provided, "Please CC Donna and me on the email."
Now, I'm starting to get confused about which word to use, them or their. So let's just plow (did you know that the "plough" version of this word is British?) through all of this themming and theiring (not real words).
"Theirselves" is more typically spoken and is definitely not correct when written. Okay. Just don't use it. And if you don't speak it, you're less inclined to get confused about what to do when it needs to be (hint: never) written.
Them and Themselves
Grammar Girl is a major guru. She's a member of the American Copy Editors Society (did anyone know such a society exists?) and dutifully stays up to date on all things grammar. She even tracks what AP and Chicago Manual of Style have to say about proper usage. Apparently, this subject has been plaguing the brains of others. But the two monsters of style are at odds. Where AP says, with caution, it's okay to use "themself" but you may want to rephrase your sentence. Why? Because "themself" is considered that naughty of naughties, nonstandard, i.e., incorrect. However, guru Grammar Girl tells us "themselves" is okey-doke.
As for the Tangents
As for all those tangents that (ahem) arose, we'll deal with them on an item by item basis over the coming months.
Resources:
- Themselves or Theirselves – Which is Correct?
- ‘Themself’ or ‘Themselves’?
- American Copy Editors Society
- The Chicago Manual of Style Online
- The Chicago Manual of Style Online New Questions and Answers
- “them”, “themselves,” or “their selves”?
- The Associated Press Stylebook 2017: and Briefing on Media Law
- PHR/SPHR Certification
- In a Word - CCJP digital subscription