词根：-cert-

【词根含义】：确信

【词根来源】：-cern-和-cert-来源于拉丁语动词cern.o, cern.ere, crevi, cret.us/cert.us(判断,区分),从“判断/区分”引申出“确信”的含义。

【同源单词】：ascertain, certain, certainly, certainty, certificate

前缀：un-

【词根含义】：否定

【词根来源】：在希腊语中为a-, an-,拉丁语中为in-,哥特语为un-,古斯堪的纳维亚语为u-,古高地德语为un-,古英语为ne。

【同源单词】：unable, unalienable, unassuming, unbearable, unceasing

词根词缀：cern-, cert-, cer-; cret-, creet-, cre-

【来源及含义】Latin: to separate, to sift, to distinguish, to understand, to decide, to determine; separated, separation, to set apart; the glandular extraction or the movement out of a natural substance

【相关描述】Used to express the ability a person has to distinguish, or to perceive, something with the eyes and the mind. Related to crit-; as in criticize, diacritical, critique, etc.

【同源单词】ascertain, ascertainable, ascertainment, certain, certainly, certainty