Reconstruction:Proto-Slavic/sverěpъ

Etymology 1
From earlier *(e)svorěpъ, from. For the loss of the initial vowel, cf. (from *asveikīs); according Machek it was assimilated under influence of -ě-. Such etymology is supported by the dialectal Czech equivalent koňský řepíček "horse's Agrimonium", Romanian borrowings from Church Slavonic: and  and Czech and Old Polish descendants meaning "stallion", "mare".

According to Brückner: from +.

Noun

 * 1) burdock
 * 2)  wild plants

Descendants

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Etymology 2
Unclear:
 * Machek, Snoj: From, originally meaning “one who relies on themselves”.
 * Miklošič, Fortunatov: Akin to 🇨🇬.
 * Mladenov: Related to 🇨🇬,, , 🇨🇬, 🇨🇬 (effectively from + ). Potebnja also relates dial. 🇨🇬, possibly  to this set of cognates.
 * V. Merkulova: From the root of.
 * Holzer: Possibly derived from a non-Slavic IE substrate (again + ), cognate with native.

The origin of the elusive suffix in the last three proposals is uncertain. Found also in dialectal terms such as (> dial. 🇨🇬, stand.  ),  (> 🇨🇬).

Vasmer, Brückner, Jagić, Blažek discuss the adjective alongside the noun, (presumably) implying kinship between the two.

Adjective

 * 1) fierce, vicious
 * 2) wild, savage

Descendants

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