看不懂音变的筒子们请听203-206期

federal faith信念，信仰，信任 confidence 信心，信任，欺诈的

词汇起源
[Date: 1600-1700; Language: Latin; Origin: foedus 'formal agreement or joining together']

a federal country or system of government consists of a group of states which control their own affairs, but which are also controlled by a single national government which makes decisions on foreign affairs, defence etc
relating to the central government of a country such as the US, rather than the government of one of its states
adj. 联邦的；同盟的

词组短语：
（美国）联邦调查局（Federal Bureau of Investigation）

confidence man 骗子 con artist con man

confide
To tell (something) in confidence
To give as a responsibility or put into another's care; entrust: confided the task of drafting the report to her assistant.
To disclose private matters in confidence
vt. 吐露；委托
vi. 信赖；吐露秘密

例句：
I confide absolutely in his honesty.
我绝对信任他的忠实可靠。
Why didn't you confide the secret to me?
你为什么不向我透露这件秘密?

confidant
One to whom secrets or private matters are disclosed.
A character in a drama or fiction, such as a trusted friend or servant, who serves as a device for revealing the inner thoughts or intentions of a main character.
n. 知己；密友

confidential
Done or communicated in confidence; secret.
Entrusted with the confidence of another: a confidential secretary.
Denoting confidence or intimacy: a confidential tone of voice.
Containing information, the unauthorized disclosure of which poses a threat to national security.
adj. 机密的；表示信任的；获信任的

词组短语：
confidential information 机密信息；机密情报
strictly confidential 绝密；极机密
confidential data 机密数据；保密资料；机密资料

affidavit

词汇起源
[Date: 1500-1600; Language: Medieval Latin; Origin: 'he or she has made a formal promise', from affidare, from Latin ad- 'to' + Vulgar Latin fidare 'to trust']

A written declaration made under oath before a notary public or other authorized officer.
n.【法律】宣誓书，宣誓证词书；(经陈述者宣誓在法律上可采作证据的)书面陈述

diffident
Lacking or marked by a lack of self-confidence; shy and timid.
Reserved in manner.
adj. 缺乏自信的；羞怯的；踌躇的

diffidence
The quality or state of being diffident; timidity or shyness
n.无自信；羞怯

例句：
He tapped on the door, opened it, and entered with a certain diffidence.
他敲了敲门，打开了门，带着一些羞怯走了进去。

infidel
An unbeliever with respect to a particular religion, especially Christianity or Islam.
One who has no religious beliefs.
One who doubts or rejects a particular doctrine, system, or principle.
n. 异教徒；无信仰者
adj. 异教徒的；无宗教信仰的

infidelity
Unfaithfulness to a sexual partner, especially a spouse. An act of sexual unfaithfulness.
Lack of fidelity or loyalty.
Lack of religious belief.
n. 无信仰，不信神；背信；不贞的行为，私通

例句：
George turned a blind eye to his partner's infidelities.
乔治对他伴侣的私通睁一只眼闭一只眼。