Etymology morsel: Chuvash śyvăr ‘to sleep’

Chuvash ҫывӑр (śyvăr) ‘to sleep’ is not unproblematically related to any other word in Turkic. Fedotov’s dictionary doesn’t feature it, Yegor calls it unclear and refers to ыйхă (yjhă) ‘sleep’ deriving from Proto-Turkic *ūyku.

Tekin derives it from *ūdï  (related with *ūyku through original *ū ‘sleep’) through excrescent *y-, breaking of *ū into yvă, rhotacizm of *d (regular) and apocope of *-ï-. Even if irregular, none of this is impossible (although breaking usually produces ăva rather than yvă), but I think I have a better solution. [1]

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Typology of Northern Eurasia: Vocalism

Even among scholars who don’t consider ‘Altaic languages’ to be a valid cladistic grouping it is common to think of these languages as at least typologically similar. Thus, it would be useful to sketch out what these common traits are, to what extent are they found in other (vaguely) neighbouring languages, and more importantly, what differences are found between them. A good starting point would be comparing the vowel systems.

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