What are the grammatically correct alternatives of the phrase “kio la fek”?

Related question that led to this one: Isn't “kio la fek” grammatically wrong?

  • 1
    I want to say something like 'kia feka (afero)' but it sounds strange. Commented Sep 20, 2016 at 10:48
  • 1
    Isn't "grammar" a perfect tag for this question? The reference to the other question was fine. We don't need to edit this much. Commented Oct 5, 2016 at 6:00
  • @CharlotteSL Yes, and yes. Reverted. Commented Oct 5, 2016 at 6:45

3 Answers 3


If you want something with the same idea of surprise of Kio la fek and with similar intensity and vulgarity, go with Kio(n) feke ...

  • Kio feke ...
  • Kio feke estas
  • Kio feke okazas
  • Kio feke estas tio
  • Kion feke vi manĝas

Kio(n) feke ... has the same amount of syllables than Kio la fek, and has avantages. One, it is more grammaticaly correct, Two, it is easy to modulate. You can create variations depending on the intensity and the source of the surprise.


The expression "WTF" as independent expression is an english or even american idiom, which is unusual in other languages I know. If you want it as a part in a sentence

What the f**k are you talking about?

you could say

Pri kio, damne, vi parolas?

  • 1
    You are correct that it is an idiom, but still languages have means to express something like that (I can immediately think of the Bulgarian equivalent expression). I think I've actually seen damne used, and it is a good suggestion. Thanks for the answer! I'll wait to see if people come up with other alternatives. :) Commented Sep 20, 2016 at 10:37
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    I like to add -aĉ- in there too: “pri kio vi damne parolaĉas” :)
    – Neil Roberts
    Commented Sep 20, 2016 at 11:19

It seems to me that "fek" was chosen - as an anglicism - because it sounds like the third word in WTF. I've been swearing in Esperanto since before WTF was a thing, and I always swear on the devil (or the beard of Zamenhof.)

  • Kio diable estas tio?
  • Je la barbo, kion vi faras?
  • 1
    Haha, I really like the beard "option". :) Commented Sep 20, 2016 at 11:52
  • Is 'Kio, diable?' a valid WTF alternative? I like the rhythm.
    – jzknuckles
    Commented Sep 20, 2016 at 15:43
  • Yes. "kio, diable" = WTH. Commented Sep 21, 2016 at 1:44
  • 1
    Haha, nun mi diros “Kio barbe”. :) Commented Sep 22, 2016 at 20:02

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