词根：-gn-, -not-, -gnor-, -gnos-

【词根含义】：知道

【词根来源】：-gnos-来源于拉丁语动词gnosc.o, gnosc.ere, gnovi, gnotus(知道)的词干-gnosc-; -not-来源于拉丁语动词nosco, noscere, novi, not.us(知道)的过去分词词干-not-; -gnor-来源于含有否定前缀i-的拉丁语动词i.gnor.o, i.gnor.are, ignoravi, ignoratus(不知道)的词干-gnor-。这些拉丁语的词源可追溯至原始印欧语-gn-。

【同源单词】：cognition, cognitive, cognize, recognise, recognition

词根词缀：-able

【来源及含义】Latin: a suffix; expressing capacity, fitness to do that which can be handled or managed, suitable skills to accomplish something; capable of being done, something which can be finished, etc.

【相关描述】A suffix that forms adjectives. The suffix -ible has related meanings; expressing ability, capacity, fitness; capable of, fit for, able to be done, can be done, inclined to, tending to, given to.

This list is only a small sample of the thousands of -able words that exist in English.

【同源单词】abdicable, -able, abolishable, abominable, abradable, acceptable

词根词缀：not-, nosc-, nit-

【来源及含义】Latin: from gnoscere, to come to know, to get to know, to get acquainted [with]; know, learn; mark, sign; and cognoscere, to get to know, to recognize

【同源单词】annotate, annotation, cognition, cognitional, cognitive, cognoscente