Synonyms for Possible: 45+ Words for Every Shade of “It Could Happen”

I remember sitting across from a doctor once, asking the only question that actually mattered: “Is it possible?” She paused before answering, and in that pause I realized the word itself wasn’t giving me anything solid to hold onto. 

Possible could mean a five percent chance. It could mean a ninety-five percent chance. Same word, completely different amount of hope to carry out of that room.

That’s the thing about “possible” that most people never stop to notice. It’s one of the most-used words in the English language, and it’s also one of the vaguest. A weather forecaster saying rain is “possible” tomorrow isn’t promising much. 

A doctor saying recovery is “possible” is saying something entirely different, even though the word on paper looks identical.

So this isn’t just another list of fifty words that all technically mean “possible.” It’s organized around the three different jobs the word actually does: how likely something is, whether it can practically be done, and whether it’s allowed  because once you know which job you need, the right word tends to show up almost on its own.

Quick Answer

Common synonyms for possible include feasible, achievable, likely, conceivable, viable, plausible, attainable, and doable. The right choice depends on what kind of “possible” you mean: “likely” and “plausible” describe chance, “feasible” and “achievable” describe whether something can practically be done, and “permissible” or “allowable” describe whether something is allowed. Most mix-ups happen when a word from one category gets used for a completely different one.

The Three Jobs “Possible” Is Secretly Doing

Here’s something worth sitting with for a second: when you say something is “possible,” you’re almost always talking about one of three completely different things, even though the word doesn’t announce which one.

1. Chance  how likely something is to happen. “It’s possible it’ll rain later.” This is really a question of probability.

2. Capability  whether something can practically be done, given the resources, skill, or circumstances. “It’s possible to build this in six weeks.” This is really a question of feasibility.

3. Permission  whether something is allowed. “Is it possible for me to leave early today?” This is really a question of what’s permitted, dressed up in softer, more polite language.

The reason this matters isn’t academic. Say you tell a client “it’s possible” when you mean feasible, and they hear it as a probability instead  suddenly they think there’s a real chance it won’t happen, when really you just meant it’s doable with effort. Picking a synonym that matches the actual job removes that confusion entirely.

The Likelihood Scale: From Barely Possible to Nearly Certain

When “possible” is doing the “chance” job, it also comes in different strengths  and this is where most lists flatten everything into one pile.

Strength	Words	What It Signals
Low chance	Conceivable, imaginable, theoretical	Not ruled out, but far from expected
Moderate chance	Possible, plausible, credible	A real, reasonable chance
Strong chance	Likely, probable, expected	More likely to happen than not
Near certainty	Almost certain, virtually guaranteed	Very high confidence, though not 100%

That doctor’s-office moment I mentioned earlier is a good example of why this scale matters. “Recovery is conceivable” and “recovery is likely” are both technically “possible,” but they’d land completely differently in that room. 

Choosing the right rung on this ladder isn’t just a vocabulary exercise, sometimes it’s the difference between honesty and false comfort.

Words for “Can It Actually Be Done”: The Feasibility Group

When “possible” is really asking about capability rather than chance, a different set of words fits better.

Word	Best Used For
Feasible	Practical, realistic given current resources
Achievable	Reachable with effort, common in goal-setting
Viable	Workable as a long-term option, common in business
Doable	Casual, everyday version of feasible
Attainable	Within reach, often used for personal goals
Workable	A solution that will function, even if imperfect
Practicable	Formal, slightly old-fashioned version of feasible

Notice these words don’t say anything about odds. Something can be perfectly feasible and still unlikely to happen for reasons that have nothing to do with whether it can be done, funding falls through, priorities shift, someone changes their mind. Feasibility and likelihood are two different questions, even though “possible” gets used for both.

Words for “Is It Allowed”: The Permission Group

This is the smallest group, but it trips people up in professional writing more than you’d expect.

Word	Best Used For
Permissible	Formal, especially legal or policy contexts
Allowable	Slightly less formal than permissible
Acceptable	Broader  covers both rules and social norms
Sanctioned	Officially approved, often institutional

“Is it possible for employees to work remotely on Fridays?” is really asking “is it permissible,” not “is it likely” or “is it feasible.” Swapping in the right word here makes company policies and formal writing sound far more precise.

Possible vs. Probable vs. Likely vs. Feasible: What’s the Real Difference?

These four get used as if they’re interchangeable, and honestly, in casual conversation, most people let it slide. In precise writing, though, they’re not the same at all.

Word	What It Really Means	Category	Example
Possible	Not ruled out; could happen	Chance (broad)	“It’s possible we’ll finish early.”
Probable	More likely than not to happen	Chance (strong)	“It’s probable we’ll finish early, based on current progress.”
Likely	Similar to probable, slightly less formal	Chance (strong)	“We’re likely to finish early.”
Feasible	Can practically be done	Capability, not chance	“Finishing early is feasible if we cut two features.”

The distinction worth remembering: “possible” is the widest net; it just means something isn’t impossible. “Probable” and “likely” narrow that net to things that are actually expected to happen. “Feasible” isn’t about odds at all; it’s about whether something can be pulled off. Mixing these up is how a merely-possible plan accidentally gets presented as a probable one, which is a genuinely easy way to overpromise without meaning to.

Real Examples: Choosing the Right Word

• Instead of: “It’s possible we’ll hit the deadline.” Try: “It’s feasible to hit the deadline if the design phase wraps this week.” (Capability, with a condition attached)
  
• Instead of: “Is it possible she already knows?” Try: “Is it conceivable she already knows?” (Low-probability chance, almost rhetorical)
  
• Instead of: “It’s possible to save enough for a house in two years.” Try: “It’s attainable to save enough for a house in two years, with the right budget.” (Personal goal, capability-focused)
  
• Instead of: “Is it possible to bring a guest to the event?” Try: “Is it permissible to bring a guest to the event?” (Formal permission)
  
• Instead of: “Recovery is possible, but it’ll take time.” Try: “Recovery is likely, but it’ll take time.” (Shifts from bare possibility to real expectation  a meaningfully different message)
  

Antonyms for Possible

Useful for the opposite meaning, depending on which “job” you’re negating: impossible, unlikely, improbable, unfeasible, unattainable, unachievable, out of the question.

Common Mistakes People Make With These Synonyms

1. Using “likely” or “probable” when you actually mean “possible.” Saying something is “likely” when it’s really just “not impossible” oversells the odds. This is one of the more common ways expectations get set too high, often without anyone intending to mislead.

2. Confusing feasibility with likelihood. Just because something is feasible doesn’t mean it’s probable. A project can be entirely doable and still fail to happen for reasons that have nothing to do with whether it could be done.

3. Using formal permission words in casual writing. “Permissible” and “sanctioned” sound stiff in an email to a coworker. “Is it okay if” or “is it allowed” usually fits the same meaning with a lighter touch.

4. Treating “conceivable” as equal to “likely.” “Conceivable” sits at the very low end of the likelihood scale; it basically just means “not impossible to imagine.” Using it where “likely” belongs understates how confident you actually are.

5. Overpromising with “possible” in professional settings. Telling a client or manager something is “possible” without clarifying whether you mean feasible or likely leaves room for a very different set of expectations than what you intended. When the stakes are real, it’s worth spelling out which one you mean.

Pro Tips for Picking the Right Synonym

• Ask which of the three jobs you actually mean  chance, capability, or permission. This single question does most of the work.
• If you’re talking about chance, place it on the scale. Barely possible and highly probable are both technically “possible,” but they should almost never share a synonym.
• In professional or high-stakes writing, be explicit about which meaning you intend. “It’s feasible, though not guaranteed” says more in six words than “it’s possible” ever will.
• Save the formal permission words for formal contexts. “Permissible” belongs in a policy document, not a text message.

Frequently Asked Questions

Possible Synonyms — Formal

Formal writing mein feasible, plausible, viable, attainable, and conceivable jaise words useful hain. Context ke hisaab se in mein se sahi word choose karna sentence ko more precise banata hai.
Example: A feasible solution should be identified before the final decision is made.

Synonyms for Possible in a Sentence

“Possible” ko replace karte waqt sentence ka exact meaning dekhna zaroori hai. Likely, feasible, plausible, aur achievable har situation mein ek jaisa meaning nahi dete.
Example: It is possible that she will arrive early → It is likely that she will arrive early.

Possible Antonyms

“Possible” ka direct antonym impossible hai, lekin context ke mutabiq unlikely, improbable, unfeasible, ya unattainable bhi use ho sakte hain. Har antonym possibility ke different aspect ko describe karta hai.
Example: Finishing the entire project in one hour is impossible.

Synonyms for Possible Solutions

Possible solutions ke liye feasible, workable, practical, viable, aur achievable useful alternatives hain. In words se pata chalta hai ke solution sirf consider nahi ho raha, balki realistically kaam bhi kar sakta hai.
Example: The team discussed several feasible solutions to the problem.

Possible Synonym and Antonym

A common synonym for “possible” is feasible, while its most direct antonym is impossible. However, likely and unlikely can work when you’re specifically talking about chances.
Example: A feasible plan is possible, but an impossible deadline cannot be met.

Synonym for Possibility

Depending on the context, chance, probability, potential, prospect, and likelihood can replace “possibility.” The best choice depends on whether you mean an opportunity, chance, or expected outcome.
Example: There is a strong possibility of rain → There is a strong likelihood of rain.

Possible Synonyms for Academic Writing

Academic writing usually benefits from precise words such as plausible, feasible, viable, conceivable, and probable. These words help explain whether something can happen, can be done, or is supported by evidence.
Example: The researchers proposed a plausible explanation for the unexpected result.

Another Word for Possibly

Instead of possibly, you can use perhaps, maybe, conceivably, potentially, or potentially depending on the sentence. “Perhaps” sounds natural, while “conceivably” is more formal.
Example: Perhaps the results will change after further testing.

Final Thoughts

“Possible” carries more weight than its five letters suggest. It’s the word standing between hope and disappointment more often than people realize, whether that’s a doctor’s prognosis, a deadline at work, or a goal someone’s almost afraid to say out loud. 

The trouble is, the word doesn’t tell you which job it’s doing. It just sits there, technically true, while everyone in the room fills in their own version of how much hope to attach to it.

Next time it shows up in something that actually matters, it’s worth pausing on one question: is this about chance, about capability, or about permission? Once that’s clear, the right word  whether it’s a cautious “conceivable” or a confident “likely”  usually says exactly what needs to be said.