Used and loved by millions
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com
unsuccessful
Grammar usage guide and real-world examplesUSAGE SUMMARY
The phrase "unsuccessful" is correct and usable in written English.
It can be used to describe a lack of success in an endeavor or attempt. Example: "Despite their efforts, the project was ultimately deemed unsuccessful."
✓ Grammatically correct
News & Media
Formal & Business
Science
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Human-verified examples from authoritative sources
Exact Expressions
60 human-written examples
Please note that no correspondence will be entered into with unsuccessful candidates.
News & Media
No verbal or written correspondence will be entered into with unsuccessful applicants although unsuccessful applicants may apply to other selective Guardian Masterclasses.
News & Media
Labor introduced a controversial "no advantage test" on 13 August last year in an unsuccessful attempt to stop asylum boats from coming by insisting that those applying for refugee status in that way received no benefit compared with those who stayed in refugee camps in the region.
News & Media
It was the rotting Ottoman remains that the British occupied (a big eye on the oil) and started modernising (that Blairish word) after the first world war, with largely unsuccessful results that culminated in Saddam Hussein, from a pro-Nazi clan in Tikrit, a city now occupied by Isis.
News & Media
The next ones were less benign, driving through a rainstorm on the M11 in a deliberate, and not entirely unsuccessful, attempt to scare me.
News & Media
Unsuccessful contestants are then forced to exit by attempting to lift the notoriously tricksy, rust-riddled garage door, while successful candidates are allowed to exit using the side door and taken directly on to the O2 Arena stage where they'll perform again in front of thousands of hysterical fans.
News & Media
The money was taken out of my PayPal account, but within minutes Asos emailed saying the order was unsuccessful.
News & Media
The budget reveals how the government will fund an extension of the national collaborative research infrastructure strategy (NCRIS), which emerged as a controversial bargaining chip in unsuccessful Senate negotiations.
News & Media
"The union has spent its members' dues money in the past two years attacking the McDonald's brand...in an unsuccessful attempt to unionize workers," the company said in a statement.
News & Media
The founder of the US fashion brand American Apparel, who was fired last week, has launched a campaign to get his job back and said he will seek severance pay of up to $25m £15mm) if he is unsuccessful.
News & Media
In his advocacy for this regime change - to bring about a shift from discretion to a rule for monetary growth - he was conspicuously unsuccessful.
News & Media
Expert writing Tips
Best practice
Use "unsuccessful" to describe attempts, efforts, or ventures that did not achieve their intended outcome. Ensure the context clearly indicates what was attempted and why it was considered unsuccessful.
Common error
Avoid using "unsuccessful" when "incomplete" or "pending" would be more accurate. "Unsuccessful" implies a definitive failure, not just a lack of current progress.
Source & Trust
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested
Linguistic Context
The word "unsuccessful" functions primarily as an adjective. It modifies nouns to describe something that has not achieved the desired outcome or aim. Ludwig AI confirms its correct and frequent usage in varied contexts.
Frequent in
News & Media
50%
Formal & Business
25%
Science
25%
Less common in
Encyclopedias
0%
Wiki
0%
Social Media
0%
Ludwig's WRAP-UP
The word "unsuccessful" is a common and versatile adjective used to describe efforts or attempts that have not achieved their desired outcome. Ludwig AI confirms its correctness and widespread use across various contexts, particularly in news, business, and science. While direct synonyms like "failed" exist, "unsuccessful" offers a nuanced way to convey a lack of success without necessarily implying complete failure or incompetence. When using "unsuccessful", it's important to consider the degree of failure and choose the most appropriate term to accurately reflect the situation. Remember to ensure the context indicates clearly what was attempted and consider if a different word would have been more proper or accurate.
More alternative expressions(6)
Phrases that express similar concepts, ordered by semantic similarity:
failed
Direct synonym, indicating a complete lack of success.
abortive
Describes something that is unsuccessful because it was prematurely terminated.
fruitless
Suggests an endeavor that yielded no positive results despite effort.
ineffective
Indicates a lack of ability to produce the desired effect.
unavailing
Describes something that is of no use or advantage; futile.
thwarted
Indicates that something was prevented from succeeding.
in vain
Highlights that efforts were made but did not achieve the desired outcome.
come to naught
A more idiomatic expression indicating that something resulted in nothing.
gone awry
Suggests that plans or actions deviated from the intended course and failed.
fallen through
Specifically refers to plans or agreements that did not materialize.
FAQs
How can I use "unsuccessful" in a sentence?
You can use "unsuccessful" to describe a failed attempt or endeavor. For example, "His "unsuccessful attempt" to climb the mountain left him disappointed".
What are some alternatives to saying "unsuccessful"?
Depending on the context, you can use alternatives like "failed", "fruitless", or "ineffective".
Is it better to say "not successful" or "unsuccessful"?
Both "not successful" and "unsuccessful" are grammatically correct, but "unsuccessful" is generally more concise and direct. The choice depends on the desired tone and flow of your writing.
What is the difference between "unsuccessful" and "unfortunate"?
"Unsuccessful" describes a failure to achieve a desired outcome, while "unfortunate" describes something that is unlucky or regrettable. For example, an "unsuccessful business" venture versus an unfortunate accident.
Editing plus AI, all in one place.
Stop switching between tools. Your AI writing partner for everything—polishing proposals, crafting emails, finding the right tone.
Table of contents
Usage summary
Human-verified examples
Expert writing tips
Linguistic context
Ludwig's wrap-up
Alternative expressions
FAQs
Source & Trust
94%
Authority and reliability
4.5/5
Expert rating
Real-world application tested