fundamentally

adverb

fun·​da·​men·​tal·​ly ˌfən-də-ˈmen-tᵊl-ē 

: with regard to what is basic, essential, or fundamental : at a fundamental level

a fundamentally honest person

a fundamentally new/different approach

Most theories of the internal structure of Venus begin with the assumption that the planet is fundamentally similar to the earth …

—Andrew and Louise Young

: in a basic or fundamental manner

This "disposable" work force is the most important trend in business today, and it is fundamentally changing the relationship between Americans and their jobs.

—Janice Castro

Examples of fundamentally in a Sentence

Recent Examples on the Web

Then, Timmons said, a review of county property records revealed a transaction that fundamentally changed his client's understanding of the project. — Zachary Bynum, CBS News, 26 June 2026

That level of granularity fundamentally changes decision-making. — Arthur Zaczkiewicz, Footwear News, 25 June 2026

Developed over three years, with more than a year dedicated to the case alone, this approach fundamentally reshapes the watch’s architecture. — Richard Mille Contributor, Forbes.com, 25 June 2026

The county argues the grand jury fundamentally misunderstood what happened before the explosion, saying its investigation relied on speculation instead of evidence and wrongly blamed county officials for a criminal enterprise prosecutors say was built on years of deception. — Daniel Lempres, Sacbee.com, 23 June 2026

Word History

First Known Use

15th century, in the meaning defined above

Rhymes for fundamentally

• accidentally
• detrimentally
• governmentally
• incidentally
• incrementally
• instrumentally
• sentimentally
• temperamentally
• coincidentally
• environmentally
• experimentally
• mentally