köken: From Old Galician-Portuguese certo, from Latin certus (“certain”), past participle of cernō (“to sift; to discern”), from Proto-Indo-European *krey- (“to move; to separate”).
certain, clear, without a doubt · secure, reliable, able to be trusted completely
köken: From Old Japanese. First attested in the Nihon Shoki of 720 CE. Derived from the tashi- element seen in たしに (tashi ni, “sufficiently; firmly; surely”) and たしない (tashinai, “difficult, agonizing; poor, lacking”) + adjective-forming suffix か (-ka).
certain · fixed, settled, firm · resolved, determined
çekim: karşılaştırma certior · üstünlük certissimus
zıt: incertus, dubius, suspensus, vagus, anceps
köken: Etymology tree Proto-Indo-European *krey- Proto-Italic *kritos Latin certus From Proto-Italic *kritos, the original perfect passive participle of *krinō (Latin cernō). Due to the shift in meaning, it was replaced in the verbal paradigm by crētus.
köken: From Middle Low German seker, from Old Saxon sikur, sikor, from Proto-West Germanic *sikur (“free, secure”), from Latin sēcūrus (“secure, unworried”).
certain, sure · certain (having been determined but unspecified)
çekim: karşılaştırma istejší · üstünlük najistejší
köken: Etymology tree Proto-Slavic *jistъ Slovak istý Inherited from Proto-Slavic *jistъ.
Slovencegotov, sevéda
Etimoloji
Borrowed from Middle English siker (whence English sicker), from Old English sicor, from Proto-West Germanic *sikur, from Latin sēcūrus. Doublet of segur and siŵr.