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know (v.)

古英语 cnawan (第七类强动词; 过去时 cneow, 过去分词 cnawen), “感知一个事物与另一个事物相同,” 也是“能够区分” 一般(tocnawan); “感知或理解为事实或真理” (与 believe 相对); “知道如何(做某事)”, 来自原日耳曼语 *knew- (也是古高德 bi-chnaan, ir-chnaan “知道” 的来源), 来自PIE词根 *gno- “知道”.

发音见 kn-. 这个动词曾经在日耳曼语中广泛使用, 现在只在英语中保留, 在英语中它有广泛的应用, 涵盖了其他语言中需要两个或两个以上动词的意思(如德语 wissen, kennen, erkennen, 部分 können; 法语 connaître “感知, 理解, 认识”, savoir “有知识, 知道如何;” 拉丁语 scire “理解, 感知”, cognoscere “得到了解, 认识;” 古教会斯拉夫语 znaja, vemi). 盎格鲁-撒克逊人也用两个不同的词来表示, 另一个是 witan (见 wit (五) ).

从13世纪作“经历, 活过”. 意为“与之性交”, 也见于其他现代语言中, 从13世纪起被证明为, 来自《旧约》(创世记四1). 从1540年代开始出现在口语中, 暗示狡猾或精明(但往往是否定的); 以 not know one's ass from one's elbow 是1930年的.

As far as (one) knows “尽其所知” 是14世纪末的说法. God knows 是15世纪的. 要 know too much (被允许居住, 逃跑等) 是1872年的. 要 know better “博采众长” 是1704年的.

You know 作为括号的填充物是1712年的, 但它的根源是14世纪的 You know 作为一种委婉的说法, 指不可提及的事情或情况, 是1867年的. you-know-who 对于一个被认为最好不要提及名字的人(但暗示听者知道), 是1840年的.

作为表示惊讶的意思. what do you know 由1914年证实. Don't I know it 在相反的意义上(“你不需要告诉我” )是1874年的. You never know as a response to something unexpected is attested from 1924.

Origin and meaning of know

know (n.)

“内幕消息”, 1883年, 在 in the know, 来自 know (五) 更早的意思是“知识, 知道的事实” (1590年代).

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Definitions of know from WordNet
1
know (v.)
be cognizant or aware of a fact or a specific piece of information; possess knowledge or information about;
I know that the President lied to the people
I know it's time
I want to know who is winning the game!
Synonyms: cognize / cognise /
know (v.)
know how to do or perform something;
She knows how to knit
Does your husband know how to cook?
know (v.)
be aware of the truth of something; have a belief or faith in something; regard as true beyond any doubt;
Galileo knew that the earth moves around the sun
I know that I left the key on the table
know (v.)
be familiar or acquainted with a person or an object;
This flower is known as a Peruvian Lily
I know him under a different name
We know this movie
Do you know my sister?
She doesn't know this composer
know (v.)
have firsthand knowledge of states, situations, emotions, or sensations;
have you ever known hunger?
I know the feeling!
Synonyms: experience / live
know (v.)
accept (someone) to be what is claimed or accept his power and authority;
know (v.)
have fixed in the mind;
Do you know the poem well enough to recite it?
This student knows her irregular verbs
I know Latin
know (v.)
have sexual intercourse with;
Adam knew Eve
Synonyms: sleep together / roll in the hay / love / make out / make love / sleep with / get laid / have sex / do it / be intimate / have intercourse / have it away / have it off / screw / fuck / jazz / eff / hump / lie with / bed / have a go at it / bang / get it on / bonk
know (v.)
know the nature or character of;
we all knew her as a big show-off
know (v.)
be able to distinguish, recognize as being different;
The child knows right from wrong
know (v.)
perceive as familiar;
I know this voice!
2
know (n.)
the fact of being aware of information that is known to few people;
he is always in the know
From wordnet.princeton.edu