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Processed with VS1Compare plain descriptions of success and failure with informal, expressive alternatives—and use them in the right setting.
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Source: VOA Learning English · Words and Their Stories
View original article & transcriptTo “ace” a test is to do extremely well, and to “pass with flying colors” is to succeed very clearly. In casual American English, “bomb” as a verb means fail badly; a “dud” or a “flop” is a disappointing result, especially entertainment. “The bomb,” however, can mean something is excellent in very informal slang. These phrases have different registers, and some can sound harsh when used about a person’s work.
Cultural note: “The bomb” is highly informal and may be misunderstood, especially in security-sensitive settings; use “excellent” or “great” when clarity matters. “Bombed,” “dud,” and “flop” can sound blunt or insulting. For feedback, describe what did not work and how it can improve rather than labeling a person or their effort.
Keep exploringOne short word can mean failure as a verb and praise as a noun phrase—context does the work.
Phrase guide · 6 expressions
Original explanations and examples, created for learners. Save a card for later or hear the phrase spoken by your browser.
Choose between an informal high score and a vivid success idiom.
Meaning
Earn a very high grade on an exam or assessment.
Tone & use
Informal American English. It can also mean perform very well at a task more generally.
Example
“Mina aced the certification exam after setting aside an hour to review each evening.”
Meaning
Succeed very clearly or perform extremely well.
Tone & use
Positive and slightly celebratory; it can apply to a test, review, inspection, or other challenge.
Example
“The new café passed its first health inspection with flying colors.”
Recognize informal phrases for failure without turning them into personal insults.
Meaning
Fail badly or receive a very poor response.
Tone & use
Informal and blunt. Avoid it for sensitive feedback; it describes an outcome, not a person’s worth.
Example
“The first presentation bombed because the slides were difficult to read, so the team simplified them.”
Meaning
Something that fails to work or disappoints expectations.
Tone & use
Informal and dismissive. Often used about a product, event, or film, not a person.
Example
“The backup battery turned out to be a dud, so we borrowed a replacement before the trip.”
Meaning
A complete failure, especially a show, film, event, or product.
Tone & use
Informal and critical. It often judges public success rather than the effort behind the work.
Example
“The outdoor screening was a flop after heavy rain kept most people away.”
Notice how grammar and setting change what “bomb” means.
Meaning
Something considered excellent or very appealing.
Tone & use
Very casual slang, especially among younger speakers; use “great” or “excellent” in formal or safety-sensitive settings.
Example
“My cousin says the new noodle shop is the bomb, but I will try it before making up my mind.”
Knowledge check
Choose the expression that best fits each situation.
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