tacit [noun]
tacit 常与 agreement、understanding、approval 等名词搭配，表示未明说但被理解的。
They reached a tacit agreement to avoid the topic.
他们达成了默契，避免谈论这个话题。
心照不宣的；默示的；含蓄的
基于归纳的；非演绎的；默认的；暗含的；心照不宣的；由行动或言语暗示的；非源自形式推理原则；基于归纳而非演绎。；沉默寡言的
Understood or implied without being stated explicitly, often through silence.
默认的；暗含的；心照不宣的
Implied, but not made explicit, especially through silence.
由行动或言语暗示的
implied by or inferred from actions or statements
非源自形式推理原则；基于归纳而非演绎。
Not derived from formal principles of reasoning; based on induction rather than deduction.
They had a tacit agreement to avoid discussing politics at family dinners.
他们有一个心照不宣的约定，不在家庭聚餐时谈论政治。
用法提示：tacit 是形容词，修饰 agreement，表示“心照不宣的、默契的”。
AI contextual example
Her silence was taken as tacit approval of the plan.
她的沉默被视为对该计划的默许。
用法提示：tacit 是形容词，修饰 approval，表示“默示的、不言明的”。
AI contextual example
The two colleagues shared a tacit understanding that they would help each other meet deadlines.
这两位同事有一种心照不宣的默契，会互相帮助赶在截止日期前完成任务。
用法提示：tacit 是形容词，修饰 understanding，表示“心照不宣的、默认的”。
AI contextual example
tacit 常与 agreement、understanding、approval 等名词搭配，表示未明说但被理解的。
They reached a tacit agreement to avoid the topic.
他们达成了默契，避免谈论这个话题。
作表语时较少见，常用于书面语。
The support for the plan was tacit.
对该计划的支持是默许的。
implicit 指未明说但能从语境、逻辑或行为中推断出来；含义比 tacit 广，不局限于沉默或默认，常用于 agreement、approval 等搭配。
unspoken 强调没有用言语表达出来，常指双方都理解却不言明的默契，与 tacit 最接近；常见搭配如 unspoken agreement、unspoken rule。
unstated 强调没有明确说明或声明，可能只是未提及，不一定带有 tacit 所含的默许或默认意味。
unexpressed 侧重思想、情感等没有说出来或表露出来，不一定是双方默认；tacit 则通常隐含通过沉默或不反对表示同意。
grammar · medium
易错句子He nodded tacit.
正确表达He nodded tacitly.
tacit是形容词，不能直接修饰动词；应使用其副词形式tacitly。
grammar · medium
易错句子She remained tacit during the meeting.
正确表达She gave a tacit approval to the plan.
tacit不常用于描述人的沉默行为，而常用于描述协议或理解是心照不宣的。应使用silent或taciturn来描述人的沉默。
tacit 指“暗示的，不言明的”，explicit 是其直接反义，表示明白说出或写出；此对比不用于形容人沉默寡言的语境。
tacit 的“不言明”与 express 的“明示”相对，常见于 consent、condition 等搭配。
tacit 强调隐含，overt 强调公开可见，互为反义；不可把 tacit 误当“沉默”而用 loud 作反义。
spoken 与 unspoken/tacit 相对，指用口头表达；仅用于“口说/不明言”的对比中。
tacit 指意思不言而喻，taciturn 指人不爱说话
默契；未言明的同意
The two sides reached a tacit agreement to avoid discussing the issue.
双方达成了默契，避免讨论这个问题。
默许
Her parents showed their tacit approval by not objecting to her decision.
她的父母没有反对她的决定，以此表示默许。
默契；心照不宣
They had a tacit understanding that neither would mention the incident again.
他们之间有个默契：谁也不许再提那件事。
隐性知识；默会知识
Much of his skill comes from tacit knowledge gained through years of practice.
他的很多技艺来自多年练习积累的隐性知识。
默示同意；默许
The policy was implemented with the tacit consent of the board.
这项政策是在董事会的默许下实施的。
adverb
常与 tacit 搭配，指未明说但各方默认接受的安排。
tacit approval 指没有明说但通过默认或沉默表示的认可。
tacit consent 指未经明确表态但以行动或沉默表示的允许。
tacit understanding 指双方不言自明的共同认识或默契。
tacit knowledge 指难以言传、靠经验获得的隐性知识。
默契；心照不宣的同意
They reached a tacit agreement not to discuss the matter.
他们达成了默契，不再谈论这件事。
默契；不言而喻的理解
There was a tacit understanding between the two colleagues that they would cover for each other.
两位同事之间有一种默契，互相替对方打掩护。
默许；默示的同意
The manager gave his tacit approval by not objecting to the plan.
经理没有反对这项计划，算是默许了。
Dictionary facts from ECDICT, OCTANOVE, WIKTIONARY.