assuming

American  

[uh-soo-ming] / əˈsu mɪŋ /

adjective

1. taking too much for granted; presumptuous.

---

assuming British  

/ əˈsjuːmɪŋ /

adjective

1. expecting too much; presumptuous; arrogant

---

conjunction

1. (often foll by that) if it is assumed or taken for granted (that)

   even assuming he understands the problem, he will never take any action

Other Word Forms

• assumingly adverb
• self-assuming adjective

Etymology

Origin of assuming

First recorded in 1595–1605; assume + -ing ²

Example Sentences

A small team would be needed to extract the uranium, assuming it could be found in a single location.

From Salon • Apr. 3, 2026

Pimco has shaved off 0.3 to 0.4 percentage point its forecast, assuming the conflict winds down quickly, managing director Tiffany Wilding said.

From The Wall Street Journal • Apr. 3, 2026

With Craig Gordon expected to join Gunn in the US - assuming he is fit - might Bain jump ahead of Kelly as the third goalkeeper?

From BBC • Apr. 1, 2026

However, oil isn’t likely to immediately return to its prewar levels, even assuming a swift U.S. exit.

From Barron's • Mar. 31, 2026

The car pulled up to the main gate and Ben pulled down the sun visor and tried to age his face five years by assuming a stern, no-nonsense expression.

From "The Great Santini" by Pat Conroy