Thesaurus.com
Dictionary.com
Definitions

successful

[suhk-ses-fuhl] / səkˈsɛs fəl /
ADJECTIVE
favorable, profitable
Synonyms
STRONGEST
fortunate fruitful happy lucky lucrative outstanding prosperous rewarding strong wealthy
WEAK
acknowledged advantageous ahead of the game at the top at top of ladder auspicious bestselling blooming blossoming booming champion crowned efficacious extraordinary flourishing fortuitous moneymaking notable noteworthy on track out in front paying rolling thriving top triumphant unbeaten undefeated victorious
Antonyms
STRONGEST
bad hopeless poor sad unfortunate unhappy unlucky unsuccessful
WEAK
forfeiting losing unfavorable unprofitable

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.

Those specific weights have a combined three winners, while 11st 6lb has been the most successful individual weight with three victories.

From BBC • Apr. 10, 2026

One 30-year-old resident of Tehran told AFP they were sceptical negotiations will be successful, describing most of what Trump says as "pure noise and nonsense".

From Barron's • Apr. 10, 2026

Intimidating and brilliant, his Julian Sklar is by turns amusingly viperish and not quite successful at concealing the softness of age.

From The Wall Street Journal • Apr. 9, 2026

The private LA28 group needs the city’s police, fire, sanitation, streets and transportation services to deliver a successful event.

From Los Angeles Times • Apr. 9, 2026

Then, ever so slowly and carefully, the world’s first successful combat submarine was lifted out of the silt and clay of the harbor bottom.

From "Shipwrecked!" by Martin W. Sandler