SUBSTANTIALLY Synonyms: 57 Similar and Opposite Words

substantially

adverb

Definition of substantially

as in mostly

for the most part the Little House books are substantially based on the memories of Laura Ingalls Wilder

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Example Sentences

Examples are automatically compiled from online sources to show current usage. Read More Opinions expressed in the examples do not represent those of Merriam-Webster or its editors. Send us feedback.

Recent Examples of substantially Article 3, Section 2 substantially restricts lawsuits by the NFLPA and players against the league and clubs over matters addressed by the CBA. — Michael McCann, Sportico.com, 26 Oct. 2026 Sweaters rose 41 percent during the holiday period, substantially exceeding their annual growth rate, while activewear increased 16 percent during the holidays despite a 2 percent decline in full-year units. — Alexandra Harrell, Footwear News, 26 Oct. 2026 The film performed substantially better than the $6-million to 10-million box office analysts had forecast. — Cerys Davies, Los Angeles Times, 26 Oct. 2026 If the market rises substantially, the investor may participate only up to the cap and miss gains above that level. — Daniel Kern, Forbes.com, 26 Oct. 2026 Differentiation was substantially lower within supercolonies than between them. — Maria Mocerino, Interesting Engineering, 25 Oct. 2026 If the once-a-decade rhythm has any rationale, in fact, the pressure for a meaningful midterm ought to be building substantially. — Ron Elving, NPR, 24 Oct. 2026 Roughly one-third of Gaston households rent, compared with about one-fifth in Union, and renters throughout the region reported substantially lower well-being and greater financial vulnerability than homeowners. — Charlotte Observer, 24 Oct. 2026 Because the mesh is extremely thin and flexible, the researchers suggest stacking multiple layers to increase the total electricity generated without substantially increasing the device's bulk. — New Atlas, 23 Oct. 2026

Recent Examples of Synonyms for substantially

Adverb

From SportsCenter star to CEO Eisen, 57, worked for ESPN from 1996 to 2003, mostly anchoring SportsCenter during the show’s cultural peak.

— Sydney Lake, Fortune, 25 Oct. 2026
Throughout the 1980s, ‘90s and into the early 2000s, top schools played their exhibitions against elite amateur teams made up mostly of former college athletes.

— ABC News, ABC News, 25 Oct. 2026

Definition of mostly

Adverb

But the one question that has come up time and again -- what to do with drivers whose jobs would be eliminated -- remains largely unanswered.

— Arkansas Online, Arkansas Online, 23 Oct. 2026
That is enough for engineering, because engineering is largely a text-generation problem.

— Stephen Messer, Fortune, 23 Oct. 2026

Definition of largely

Adverb

Billionaires have poured hundreds of millions into super political action committees (super PACs) for campaign ads—chiefly supporting Republican candidates in tight Senate races.

— Connor Greene, Time, 21 Oct. 2026
Long before launch, the team faced obstacles that nearly thwarted the endeavor — chiefly, two rejections from NASA — before finally securing the green light for the $1 billion project under the New Frontiers Program in 2011.

— Sharmila Kuthunur, Space.com, 20 Oct. 2026

Definition of chiefly

Adverb

More missiles, many more options This would significantly expand the ship’s ability to protect an entire naval task group, rather than primarily concentrating on defending itself and nearby assets.

— Christopher McFadden, Interesting Engineering, 24 Oct. 2026
Helium is primarily produced as a byproduct of natural gas processing.

— Arkansas Online, Arkansas Online, 24 Oct. 2026

Definition of primarily

Adverb

Brazil’s predominantly left-leaning film industry and its international counterpart have not stood on the sidelines.

— Rafa Sales Ross, Variety, 26 Oct. 2026
During his stint as president from 2006 to 2010, the company sold predominantly $200 and $300 jeans to affluent department-store shoppers with household incomes around $250,000.

— Tatiana Sataua, Fortune, 25 Oct. 2026

Definition of predominantly

Adverb

Outgoing ranking members Angie Craig of Minnesota and Nydia Velázquez of New York are also behind, though retiring members and frontliners generally don’t pay dues in full.

— Eleanor Mueller, semafor.com, 20 Oct. 2026
Southern accented candidates are generally heard as more conservative than those without a Southern accent, particularly to Democratic listeners.

— Valerie M. Fridland, The Conversation, 20 Oct. 2026

Definition of generally

Adverb

Both the founders had worked at other New York galleries, Klein principally with Bertrand Delacroix and Massey at Mulherin and Pollard.

— Brian Boucher, ARTnews.com, 19 Oct. 2026
At the beginning of this century, Andermatt was a quiet settlement in the Ursern Valley, known principally to committed skiers, mountaineers and the Swiss military.

— Nick Scott, Robb Report, 17 Oct. 2026