unsuccessful
6 synonyms and 1 antonyms for unsuccessful, grouped by meaning and by how common each one is.
Adj — Not achieving the intended result; having failed.
Synonyms
Everyday swaps
Common words most readers know — safe in any writing.
Less common
Still standard English, but they carry more weight.
Rare, literary or technical
Precise, but they will stand out — check the sense before using one.
Antonyms
How to use unsuccessful
The word patterns that sound natural to a native speaker.
Frequently asked questions
What does “unsuccessful” mean?
The word “unsuccessful” means not achieving the intended result; having failed. In plain terms, it failed — the goal was not reached.
How do you pronounce “unsuccessful”?
“Unsuccessful” is pronounced uhn-suhk-SEHSFL (/ˌʌnsəkˈsɛsfl̩/ in IPA).
How do you use “unsuccessful” in a sentence?
Here is “unsuccessful” used in a sentence: “His first attempt at the exam was unsuccessful.”
What is the opposite of “unsuccessful”?
The opposite of “unsuccessful” — its antonyms — is successful.
What part of speech is “unsuccessful”?
“Unsuccessful” is an adjective.
Is “unsuccessful” a common word?
“Unsuccessful” is a fairly common word in modern English, usually learned at around the B2 level.
What is the difference between "unsuccessful" and "failed"?
"Unsuccessful" describes an attempt or effort that did not achieve its intended result, and it is often used as a slightly softer, more formal alternative to "failed." "Failed" can carry a stronger sense of complete breakdown, while "unsuccessful" is common in neutral contexts like job applications or business outcomes.
Is "unsuccessful" a formal word to use in job rejection letters?
Yes, "unsuccessful" is the standard, polite term used in formal contexts such as recruitment, meaning the applicant did not achieve the intended result of being hired. Phrases like "your application was unsuccessful" are common in professional correspondence.
What is a common collocation with "unsuccessful"?
"Unsuccessful attempt" and "unsuccessful bid" are frequent collocations, both describing an effort that failed to achieve its intended result. It also pairs naturally with words like "candidate," "application," and "negotiation."