'Засрать' (from 'срать') is а rude Russian verb means just about 'to dirty off' (literally: to grime smth with feces). What is the correct form of its imperfect: 'засирать' or 'засерать'? And why so?
Как будет несовершенный вид к засрать?

2 Answers 2


Засирать should be correct; compare забрать/забирать and задрать/задирать, as well as a few verbs with a differently patterned infinitive but the same present-tense stem: запереть (запру) — запирать, замереть (замру) — замирать, etc.

  • Yes, all right.)))
    – behemothus
    Jul 17, 2015 at 14:38

I would consider засерать as pretty archaic, coming from the form засерить. In modern language, засирать is more natural.

  • I would consider засерать a spelling mistake, both now and centuries ago. Where does засерить even come from? Looks so counter-etymological it's probably relatively new. Aug 1, 2015 at 22:19
  • Well, probably not archaic but regional. I have heard серить a lot from elder people, but my experience is biased towards Ukrainian-ish dialects.
    – grep
    Aug 2, 2015 at 1:17
  • 1
    @Nikolay Ershov, I've heard it few times in the forms 'Хватит серить", 'насерили', etc. But it sounds a bit dialectic (South of Russia and Ural region). Aug 2, 2015 at 15:33
  • @GeorgeShuklin could it be a plenivocal infinitive (like тереть) with shifted stress due to semantic reasons (disambiguation from сереть=>серею), later reinterpreted as 2nd conjugation? Aug 2, 2015 at 16:11

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