adjective
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having succeeded in one's endeavours
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marked by a favourable outcome
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having obtained fame, wealth, etc
Usage
Spelling tips for successful The word successful is hard to spell because it can be hard to know which letters are doubled. Both the c and the middle s are doubled, but the f and l are not. How to spell successful: To be a success, you need to see (two Cs) Some Smarts (two Ss). This reminds you that success is spelled with a double C in the middle and a double S at the end. To spell successful, you add the base word (success) to the suffix -ful.
Other Word Forms
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half-successfulnessnoun
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successfulnessnoun
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half-successfuladjective
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nonsuccessfuladjective
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presuccessfuladjective
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quasi-successfuladjective
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semisuccessfuladjective
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half-successfullyadverb
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nonsuccessfullyadverb
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presuccessfullyadverb
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quasi-successfullyadverb
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semisuccessfullyadverb
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successfullyadverb
Etymology
Origin of successful
Explanation
If you win or do well, at whatever it is you do, you are successful. Successful people usually get more money, attention, and praise. If you go into business and make a lot of money, you're successful. If you play tennis and finish the season with more wins than losses, you've been successful. If you have a successful pregnancy, you give birth to a healthy baby. Successful is one of those words that covers a great deal of ground; it generally applies to anything, anyone or any venture that ends well. When you see the word successful, think "Winning!"
Vocabulary lists containing successful
Power Suffix: -ful
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Talk Like Shakespeare Day, List 5
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-ful
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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.
If successful in humans, the approach could fundamentally change how CAR-T treatments are delivered.
From Science Daily ● Oct. 7, 2026
The steps required for that process have not yet been detailed, but the company says these members will have until Dec. 21 to access their Marvel Unlimited library to ensure the transfer was successful.
From Los Angeles Times ● Oct. 6, 2026
As renter candidates become more successful, tenant unions, which have often focused on pushing landlords for changes within their own buildings, expect to have more receptive partners in local, state and federal offices.
From MarketWatch ● Oct. 6, 2026
With a successful domestic industry facing competition from abroad, you might anticipate calls for the government to provide financial support.
From BBC ● Oct. 5, 2026
Another successful pamphlet about the Fox sisters’ spirits came from Rochester printer D. M. Dewey.
From "American Spirits" by Barb Rosenstock
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
