"Тройбан" is a slang word for "три" (a ruder version of 'three'). There is also a word "трояк" (less rude and more common). The affix "як" can be attached to some other numerals to make it more informal, e.g. "двояк", "пятак".

But the affix "бан" can be found only in the word "тройбан". So, I guess, this word has a special, particular origin. I heard a story that the word "тройбан" is derived from "троебан", which, in it's turn, goes from the phrase "трое ебан", i.e. "ебан тремя" (literally means 'had sexual intercourse with three persons at once'). But I haven't found any further information about this version.

So, my question is: what is true etymology of that word?

  • 9
    It's always funny how ad hoc folk etymology is completely nonchalant about creating more questions as it tries to give answers. How could something as ungrammatical as трое ебан have possibly existed? And while the double [-jı jı-] succumbing to haplology is plausible, how would it go on to lose the vowel, triggering a quantitative shift in the preceding /о/? Commented Oct 9, 2016 at 13:56
  • Down-voted since not true - who on earth says in Russian "трое ебан" о "ебан тремя" - nobody says.
    – shabunc
    Commented Oct 16, 2020 at 13:42

3 Answers 3


-бан is an argotic suffix that is used to create word that is not used in normal/official language as one of purposes of argot itself. See тройбан, щелбан, дружбан.

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    Speculatively, the ultimate source of that -бан might be German loanwords like кегельбан and автобан, where the opaque Bahn following a transparent root came to be perceived merely as a quaint noun-deriving suffix. Whether or not it's true, the augmentative suffix -ан (друган, etc.) was likely an influence. Commented Oct 9, 2016 at 16:18

Just to prove the previous answers and to disappoint you:тройбан. belongs to school argot, "Словарь русского арго" Елистратова

ЩЕЛБАН, -а, м. Удар, щелчок. Возм. из шк.; общеупотр. «щелчок» + арготический суффикс «-бан» (ср. ДРУЖБАН, ТРОЙБАН и т. п.).

Жаргон номиналов в нумизматике

• 3 - алтын (алтынник) (с 1534 г. до начале XVIII в.) - (по Торговой книге 1670 г. 1 алтын=3 новгородки=6 денег=12 полушек), трешка, трояк, троячок, троечка, трояшка, тройбан, треха, трюльник, трюндель, , трынка, трёхкопеечник, трехрублевик, трехрублевка, трешник, трёшница; зелененькая, зеленушка (по цвету купюры 3 рубля царской и СССР)


I believe this word belongs to school slang exclusively. And concerning its roots, it's most probably derived as a pure occasionalism with a pattern similar to дерибан, щелбан etc.

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