名詞 presumption:

1. an assumption that is taken for granted
   同義詞：given, precondition
2. (law) an inference of the truth of a fact from other facts proved or admitted or judicially noticed
3. audacious (even arrogant) behavior that you have no right to
   同義詞：presumptuousness, effrontery, assumption
4. a kind of discourtesy in the form of an act of presuming

1. She was infuriated by his presumption in making the travel arrangements without first consulting her.
   他事先沒有和她商量便作好旅行安排，她對他自作主張很生氣。
2. The article has too many false presumptions.
   這篇文章中憑空臆測的東西太多。

pre.sump.tion

n.（名詞）
Behavior or language that is boldly arrogant or offensive; effrontery.
冒昧，放肆：放肆地傲慢或令人不愉快的行為或語言；厚顏無恥
The act of presuming or accepting as true.
推測；假定：推測或認定某事是真實的行為
Acceptance or belief based on reasonable evidence; assumption or supposition.
推定：以合理的證據為基礎的接受和信任；假設或假定
A condition or basis for accepting or presuming.
作為接受和推論的條件或根據
Law A conclusion derived from a particular set of facts based on law, rather than probable reasoning.
【法律】 推定：根據以法律為基礎的系列特定事實而不是從可能的推理得到的結論

來源：
Middle English presumpcion
中古英語 presumpcion
from Old French
源自 古法語
from Late Latin praesômptiô praesômptiôn-
源自 后期拉丁語 praesômptiô praesômptiôn-
from Latin [anticipation]
源自 拉丁語 [預期，期望]
from praesômptus [past participle of] praesômere [to anticipate] * see presume
源自 praesômptus [] praesômere的過去分詞 [預期，預料] *參見 presume