Had to look this up cause that's cool - Tolkein worked in etymology of words in the range of Waggle-Warlock, so arguably not much work with the front of the alphabet.

Also - dwarfopodes.

"Dwarfs" is for humans with dwarfism, "dwarves" is for the fantasy race.

Dwarrows

Funny, but: https://steadyhq.com/en/thetolkienist/posts/bbfef465-74d7-47d3-911a-e5e8a0ffe269

Tolkien worked on part of the dictionary. I think he was assigned the letter W, so dwarf would not have been in his range. But he would not have defined the plural as dwarves anyway. He deliberately chose it differently for his fantasy creatures. Great flex, I wonder what the immediate reaction of the publisher was to that quote.

In the preface of my edition of the Hobbit, there is an indirect reference made to this where Christopher Tolkien mentioned how the correct spelling is dwarfs and not dwarves.

Nice to know where it came from!