köken: From Middle High German īseren, īserīn, from Old High German īsarnīn, from Proto-Germanic *īsarnīnaz. Equivalent to Eiser (“iron”), older variant of Eisen + -en. Now reanalysable as Eisen (“iron”) + -ern, but historically eisern is itself one of the words that contributed to the development of this extended suffix -ern (see there).
aile: Eiserne Krone, eiserner Bestand, Eiserner Vorhang, eiserner Wille, Eisernes Kreuz, zum eisernen Bestand gehören
hard, firm · violent (involving extreme force or motion) · fast
çekim: karşılaştırma daha bərk · üstünlük ən bərk
köken: From Proto-Turkic *berk (“mighty”). Cognate with Turkmen and Turkish berk, Chuvash парка (park̬a, “hard, healthy”), Yakut бэрт (bert, “great, excellent”), etc.
strong, sturdy, able-bodied, robust, strapping (fit and healthy) · strong, sturdy, tough, solid, (capable of producing or withstanding great physical force) · strong, able (impressive or good)
çekim: karşılaştırma γερότερος · üstünlük γερότερος
köken: From Koine Greek γερός (gerós), from Ancient Greek ὑγιερός (hugierós), from ὑγιής (hugiḗs, “healthy, strong”).
Δεν με νοιάζει αν είναι αγόρι ή κορίτσι, αρκεί να είναι γερό παιδί.
to be rough or coarse in texture · to be rough or coarse in manner · to be wild or desolate
köken: First attested in the Worin seokbo (月印釋譜 / 월인석보), 1459. as Middle Korean 거츨다 (kechulta), from reconstructed Old Korean *kechil- (*kechil-), hypothesized on the evidence of proper noun alternation in the twelfth-century history Samguk sagi where the phonogramic sequence 居柒 (*kɨʌ t͡sʰiɪt̚) alternates with the logogram 萊 (“uncultivated”) in the names of places and individuals.
From Old East Slavic твьрдъ (tvĭrdŭ), from Proto-Slavic *tvьrdъ, from Proto-Balto-Slavic *twírˀtas, from Proto-Indo-European *twerH-. Doublet of кварц (kvarc).