indubitably

American  

[in-doo-bi-tuh-blee, in-dyoo‐] / ɪnˈdu bɪ tə bli, ɪnˈdju‐ /

adverb

1. in a way that is patently evident or certain; unquestionably; without doubt.

   A week at the spa has indubitably improved his health.

---

indubitably British  

/ ɪnˈdjuːbɪtəblɪ /

adverb

1. without doubt; certainly

---

Etymology

Origin of indubitably

First recorded in 1620–30; indubitable ( def. ) + -ly ( def. )

Explanation

Indubitably means "without doubt." If you say that you are indubitably going to run for class president, you're sure of it. With five syllables, indubitably is kind of a mouthful. Here's how to say it: "in-DOO-bit-a-blee." And while it is more of an old-fashioned adverb, indubitably remains a unique way to say "undoubtedly." In fact, doubt and indubitably share a root in the Latin word dubitabilis, meaning "doubtful." Adding the prefix in- makes something done indubitably without a doubt.

Example Sentences

See Examples For:

indubitably

The question will need to be answered by understanding the only subjectivity we are indubitably confident of: our own.

From Scientific American ● Sep. 8, 2023

In the process, they have created a stadium that does, indeed, feel indubitably SoCal — a place that is both indoors and out, a place where intimate experiences can be had amid the industrial scale.

From Los Angeles Times ● Feb. 8, 2022

And the lessons inherent in Starr's MasterClass make this point indubitably clear.

From Salon ● Nov. 22, 2021

“The first raised one eyebrow; the second, two; the third made me indubitably inadmissible.”

From Seattle Times ● Sep. 18, 2020

On the other hand, lead was easy to extract and work, and almost embarrassingly profitable to produce industrially–and tetraethyl lead did indubitably stop engines from knocking.

From "A Short History of Nearly Everything" by Bill Bryson