Synonyms

rigorously

American

[rig-er-uhs-lee] / ˈrɪg ər əs li /

adverb

in a rigidly consistent or uncompromising way; very strictly.

Access to data on the website is rigorously controlled by user account permissions and protected by passwords.
in a way that is severely exacting, accurate, careful, and thorough; to a high standard.

Prior to publication, all content is rigorously reviewed by peer experts and members of the editorial committee.
Logic, Mathematics. in a way that is logically valid.

Can anyone give me a more rigorously written proof of this theorem?

Other Word Forms

overrigorously adverb
semirigorously adverb
unrigorously adverb

Etymology

Origin of rigorously

First recorded in 1400–50; rigorous ( def. ) + -ly ( def. )

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

This is fatal to the film, which is so rigorously shallow that it amounts to a promotional video of the kind that might be produced for a fashion-mag website.

From The Wall Street Journal • Mar. 19, 2026

The firm projects a recovery in the coming year, but its finance chief stressed that it would have to focus on "rigorously" reducing costs.

From BBC • Mar. 10, 2026

“These markets allow us to rigorously validate our technology’s resilience in diverse and challenging weather conditions,” Zoox wrote in a blog post.

From MarketWatch • Mar. 9, 2026

I love Shakespeare as much as the next theater critic, but the text should have been more rigorously streamlined for a company that too often seems to be racing against the clock.

From Los Angeles Times • Feb. 26, 2026

My cycle, though imaginary, was rigorously charted on my desk calendar.

From "Middlesex: A Novel" by Jeffrey Eugenides

Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023