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

Milwaukee does the little things, and is opportunistic and fundamentally sound. —Jim Alexander, Oc Register, 17 Oct. 2025

That’s fundamentally different from what most companies are funding, and the 95% failure rate proves it. —Heather Conklin, Fortune, 16 Oct. 2025

Recall that Obama promised to fundamentally transform the United States. —Peter Lucas, Boston Herald, 16 Oct. 2025

This simple idea — that all phenomena in the Universe are fundamentally physical phenomena — is known as reductionism. —Big Think, 16 Oct. 2025

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