A supposition is an idea you are treating as true without proof — a starting assumption. It can be countable ("That's only a supposition") or uncountable ("The report is based on pure supposition").

A supposition Supposition is是 an idea you are treating as true without proof一個你當作真的、但沒有證據的想法 — a starting assumption也就是一個出發點的假設。 It它 can be countable可以當可數名詞 ("That's only a supposition")像「That's only a supposition」（那只是個臆測） or uncountable也可以當不可數名詞 ("The report is based on pure supposition")像「The report is based on pure supposition」（這份報告完全建立在臆測上）。

The word carries a mild warning: calling something a supposition is a way of saying it has not been tested, so it turns up a lot in arguments, court reports, and academic writing, usually next to words like *mere*, *pure*, or *based on*.

The word carries a mild warning這個字帶著一點警告的味道 calling something a supposition is a way of saying it has not been tested把某件事稱作 supposition，等於是在說它還沒被驗證過 so it turns up a lot in arguments, court reports, and academic writing所以常出現在爭論、法庭報告和學術寫作裡 usually next to words like *mere*, *pure*, or *based on*常常跟 mere、pure、based on 這類字放在一起。

It is more formal than *guess* and less scientific than *hypothesis*: a guess can be idle, a hypothesis is something you set up on purpose to test, but a supposition is simply a thing being taken for granted so the thinking can move on.

It它 is more formal than *guess* and less scientific than *hypothesis*比 guess 正式，又沒有 hypothesis 科學 a guess can be idle guess 可以只是隨口猜猜 a hypothesis is something you set up on purpose to test hypothesis 是你特意提出來要驗證的東西 but a supposition is simply a thing being taken for granted so the thinking can move on但 supposition 只是先被當成理所當然、好讓思考可以繼續下去的東西。

In everyday Taiwanese classrooms you will meet *assumption* far more often; treat *supposition* as its bookish cousin, useful when you want to sound careful in writing.

In everyday Taiwanese classrooms在台灣的日常課堂裡 you will meet *assumption* far more often你更常遇到的是 assumption treat *supposition* as its bookish cousin可以把 supposition 當成它比較書面的表親 useful when you want to sound careful in writing想在寫作裡顯得謹慎時很好用。