Dictionary.com
Thesaurus.com
Showing results for radically. Search instead for radiably.
Synonyms

radically

American  
[rad-ik-lee] / ˈræd ɪk li /

adjective

  1. with regard to origin or root.

  2. in a complete or basic manner; thoroughly; fundamentally.


radically British  
/ ˈrædɪkəlɪ /

adverb

  1. thoroughly; completely; fundamentally

    to alter radically

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

Other Word Forms

  • nonradically adverb

Etymology

Origin of radically

First recorded in 1600–10; radical + -ly

Explanation

The adverb radically is a great way to say "in an extreme way." When your formerly long-haired friend shows up at work with a crew cut, you could say that she looks radically different. Use radically to describe things that are done in a big way, particularly a change or an extreme position. For example, the government in your state might change radically after an important election. You'll often see the phrase "radically different" used to mean a change that's enormous, possibly even transforming. Though the root of radically, radical, originally meant "root of a word," it came to mean "far-reaching, innovative, or extreme," especially when it describes political views.

Keep Reading on Vocabulary.com

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.

In his book “Indispensable: When Leaders Really Matter,” Mukunda showed that “most of the CEOs who try to radically transform a company will fail.”

From MarketWatch • Apr. 21, 2026

The 2022 strategy promised to "radically improve" how the health and care system engaged with and listened to all women and girls, and to boost health outcomes.

From BBC • Apr. 14, 2026

Hilton and Bianco both said they would radically reshape state government, in part by dismantling regulations that are hampering development and making basic necessities — housing, food, gas, electricity — too expensive.

From Los Angeles Times • Apr. 9, 2026

“When I see an ICE agent doing something radically bad and harmful, I can recognize that that is a person who is suffering and being oppressed by a deep darkness.”

From Salon • Apr. 6, 2026

He held a picture of the financial world in his head that was radically different from, and less flattering than, the financial world’s self-portrait.

From "The Big Short" by Michael Lewis