How to use "a sure thing"

What Does "a sure thing" Mean?

• The idiomatic meaning of "a sure thing" is something guaranteed to succeed or happen without fail. It describes an outcome with virtually no risk of failure, a virtual certainty. It's not just likely; it's considered inevitable.
• While there's no definitive origin story, the phrase likely emerged from gambling contexts, where a "sure thing" would represent a bet with guaranteed winnings. Its usage broadened over time to encompass various situations beyond gambling.
• The register is generally neutral, suitable for both casual conversation and more formal contexts, although excessive use might sound colloquial in very formal settings.

How to Use It

• "A sure thing" exhibits grammatical flexibility. It can be modified with adverbs (e.g., "almost a sure thing"), negated (e.g., "not a sure thing"), and used with different verbs (e.g., "seemed a sure thing," "is a sure thing"). It can also be used with possessive pronouns (e.g., "He thought it was his sure thing.").
• Over-literal use can sound unnatural. For example, describing something as "very a sure thing" is redundant; the idiom already implies a high degree of certainty. Similarly, using it for minor, insignificant events would be inappropriate.

Real-World Examples

These examples are sourced from a sure thing on Ludwig.guru.

"It's not a sure thing." — The New York Times - Health

"He's a sure thing." — The New York Times - Sports

"Neither step is a sure thing." — The New York Times

"This seemed like a sure thing." — The New York Times

"But that's no longer a sure thing." — The New York Times

Examples sourced from https://ludwig.guru/s/a+sure+thing

Similar Phrases and Alternatives

Phrase	Context
a safe bet	Suggests a high probability of success, often in situations with some risk.
a done deal	Implies that an agreement or arrangement is finalized and irreversible.
in the bag	Colloquial; indicates that victory or success is already secured.
a foregone conclusion	Emphasizes inevitability, often with a sense of resignation or lack of surprise.
a certainty	A more formal and direct synonym, stressing the lack of doubt.
guaranteed	Highlights the assurance and security associated with the outcome.
inevitable	Stresses that a particular result is unavoidable.

Common Mistakes

• Using the phrase in contexts where the outcome is merely probable, not virtually guaranteed. For example, saying "Taking an umbrella is a sure thing to prevent rain" is incorrect since umbrellas only help prevent getting wet in the rain, but don't stop it from raining in the first place.
• Overusing the phrase, making your speech sound repetitive or cliché.
• Learners often misinterpret it literally, thinking it refers to something that is merely 'sure' or 'certain' in a general sense, rather than a guaranteed success.

Quick-Reference Summary

Expression	Idiomatic Meaning	Register	Avoid In
a sure thing	Something guaranteed to succeed or happen; a virtual certainty.	Neutral	Situations with only a high probability of success, not a guaranteed one.

FAQs

Is "a sure thing" ever used literally?

No, "a sure thing" is almost always used idiomatically. While the individual words have literal meanings, the combined phrase carries a specific figurative weight, implying a guaranteed outcome rather than simply something that is likely or certain in a general sense.

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How does "a sure thing" differ from "a safe bet"?

Both phrases suggest a high likelihood of success, but "a sure thing" implies a guaranteed outcome with virtually no risk, while "a safe bet" suggests a high probability of success, but with the implicit understanding that some risk, however small, still exists.

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I thought "a sure thing" just meant something very likely. Is that wrong?

Yes, that's a common misinterpretation. While something likely might be described as "certain" or "sure," the idiomatic expression "a sure thing" goes further. It implies a guarantee of success, a virtual certainty, leaving no room for doubt or failure. If there's still a possibility of failure, it's not truly "a sure thing."