沒說出口卻在裡面
最貼近字根的一族：東西摺在話裡或事情裡，沒有攤開成明白的字句。
unstated but understood · adjective · C2
Suggested or understood without being said in clear, direct words.
隱含的
核心畫面
One way to think of it: folded in, not spread out. Latin implicitus is 'folded into' — so what is implicit is really there, but inside; nobody unfolded it into words. Its opposite, explicit, is 'folded out' and laid flat on the table.
「摺在裡面、沒有攤開來」。implicit 的拉丁來源 implicitus 是 implicāre（往裡摺）的過去…更多收起
「摺在裡面、沒有攤開來」。implicit 的拉丁來源 implicitus 是 implicāre（往裡摺）的過去分詞；它的反義詞 explicit 則是「往外摺」——攤平在桌上、一字一句寫清楚。所以 implicit 說的東西確實存在，只是它一直摺著：一份合約沒寫但雙方都懂的約定、一句話沒講但語氣裡有的意思。想像一張摺起來的紙，字都在上面，只是你得自己打開。三個用法差在摺得多深：摺在話裡（沒說出口）、摺在整件事的結構裡（拆不掉），或者摺得那麼緊、連一絲懷疑都塞不進去。From the word’s history
From Latin implicitus, past participle of implicāre 'to fold in, entangle' (in- + plicāre 'fold') — hence 'contained inside without being stated', and the mirror image of explicit ('folded out').
來自拉丁文 implicitus，是 implicāre（in- 進去 ＋ plicāre 摺，「往裡摺、纏繞」）的過去分詞。「摺在裡面」正好對照 explicit 的「往外攤開」，這一對前綴（im-／ex-）就是理解全詞的鑰匙；同一家族還有 implicate、implication、complicated。
Payload etymology (Middle French implicite < Latin implicitus, pp. of implico), consistent with Wiktionary; im-/ex- contrast per standard Latin plicāre derivatives.
Two branches
摺得緊到毫無懷疑
從同一個「摺在裡面」走到另一邊：摺得沒有一點縫隙，也就是不留任何保留或懷疑的空間。
complete (trust/faith) · adjective · C2
Complete and containing no doubts, used especially about trust, faith, or belief.
毫無懷疑
原始詞典資料4 筆記錄
以下是外部詞典記錄的用法，原文照列，我們還沒有寫成教學內容。上面的說明才是我們自己寫的；有些用法可能上面已經講過了。
implicitadj/ɪmˈplɪsɪt/
- 1
Suggested indirectly, without being directly expressed; Implied.
- Poets often leave behind an implicit message within their words.
- The Bible and its teachings helped form the basis for the Founding Fathers' abiding belief in the inalienable rights of the individual, rights which they found implicit in the Bible's teachings of the inherent worth and dignity of each individual.
- 2
Contained in the essential nature of something but not openly shown.
- 3
Having no reservations or doubts; unquestioning or unconditional; usually said of faith or trust.
- He is not only a zealous advocate for pusilanimous and passive obedience, but for the most implicit faith in the dictatorial mandates of power.
- 4
obsoleteentangled, twisted together.
- In his deep fleece […] I cling implicit.
資料來源：英文維基詞典 English Wiktionary（CC BY-SA 4.0）。 原文照列，未經改寫。