Chernykh, P. Ja. (1993) “зя́бнуть”, in Историко-этимологический словарь русского языка [Historical-Etymological Dictionary of the Russian Language] (in Russian), 3rd edition, volumes 1 (а – пантомима), Moscow: Russian Lang., →ISBN, page 332
Derksen, Rick (2008) “*zęti”, in Etymological Dictionary of the Slavic Inherited Lexicon (Leiden Indo-European Etymological Dictionary Series; 4), Leiden, Boston: Brill, →ISBN, →ISSN, page 543
Vasmer, Max (1964–1973) “зя́бнуть”, in Oleg Trubachyov, transl., Этимологический словарь русского языка [Etymological Dictionary of the Russian Language] (in Russian), Moscow: Progress
Cognate with Lithuanianžémbėti(“to germinate, to sprout”). Per Derksen, also cognate with Latingemma(“bud, gem”) (whence Englishgem), possibly from Proto-Indo-European*ǵemb-; however, Derksen notes that this root structure is impossible for a Proto-Indo-European root.