ef·​fec·​tu·​al·​ly | \ i-ˈfek-chə(-wə)-lē How to pronounce effectually (audio) , -chü(-ə)-; -ˈfek-shwə- \

Definition of effectually

1 : in an effectual manner
2 : with great effect : completely

Examples of effectually in a Sentence

Recent Examples on the Web The trick was to get T cells to recognize and respond to cancers both more selectively and more effectually. Siddhartha Mukherjee, The New Yorker, "The Promise and Price of Cellular Therapies," 15 July 2019 By developing on Google’s open technology, the company effectually gains free development. Scott Loganbill, WIRED, "Google’s Open Source Protocol Buffers Offer Scalability, Speed," 9 July 2008

These example sentences are selected automatically from various online news sources to reflect current usage of the word 'effectually.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.

First Known Use of effectually

14th century, in the meaning defined at sense 1

Keep scrolling for more

Learn More about effectually

Time Traveler for effectually

Time Traveler

The first known use of effectually was in the 14th century

See more words from the same century

Statistics for effectually

Cite this Entry

“Effectually.” Merriam-Webster.com Dictionary, Merriam-Webster, https://www.merriam-webster.com/dictionary/effectually. Accessed 25 Feb. 2021.

Style: MLA
MLA Chicago APA Merriam-Webster

More from Merriam-Webster on effectually

Thesaurus: All synonyms and antonyms for effectually

Britannica English: Translation of effectually for Arabic Speakers

Comments on effectually

What made you want to look up effectually? Please tell us where you read or heard it (including the quote, if possible).


Test Your Vocabulary

More Confusing Words—Quiz

  • cats on impossible timber
  • The magician ______ moved the selected card to the top of the deck.
Spell It

Can you spell these 10 commonly misspelled words?

 AlphaBear 2

Spell words. Make bears.

Love words? Need even more definitions?

Subscribe to America's largest dictionary and get thousands more definitions and advanced search—ad free!