Feasible vs Probable

When to use each in English, with meaning, register, and examples.

Feasible

Top 2,000 (common) B1

Probable

Top 2,000 (common) B2 adjective

	Feasible	Probable
Pronunciation	🇬🇧 //ˈfiːzəbl// 🇺🇸 //ˈfizəbl// Hear Feasible	🇬🇧 /["/ˈprɒbəbl/"]/ 🇺🇸 /["/ˈprɑːbəbl/"]/ Hear Probable
Meaning	Possible to do or make happen.	likely to happen or be true
Example	The plan is not feasible given our current budget.	the probable cause/explanation/outcome
Register	Neutral	Neutral
How common	Top 2,000 (common)	Top 2,000 (common)
CEFR level	B1	B2
Part of speech		adjective
Collocations	feasible solution, feasible option, feasible plan, feasible proposal, feasible method	be, look, seem, highly, very, increasingly
Antonyms	infeasible, impractical, unworkable	improbable, unlikely
Common mistakes	Confused with 'possible' — they are similar but not the same., Using 'feasible' to describe something impossible or unrealistic., Saying 'infeasible' instead of 'not feasible' incorrectly.	Confused with 'probably' which indicates uncertainty., Used with incorrect verb forms, e.g., 'probable that it rains' instead of 'probable it will rain'.
Usage notes	Use 'feasible' in business or academic contexts. Avoid in casual conversation or everyday situations.	Used to indicate a strong likelihood of something occurring. Common in both spoken and written English. Avoid in very informal contexts where simpler words may suffice.

Frequently asked questions: Feasible vs Probable

What's the difference between Feasible and Probable?

Feasible: Possible to do or make happen. Probable: likely to happen or be true

Are Feasible and Probable the same CEFR level?

Feasible: B1, Probable: B2 on the CEFR scale.

Can I use Feasible and Probable interchangeably?

Not always. Feasible and Probable are related and overlap in some contexts, but they differ in register, how common they are, and usage, so swapping one for another can change the meaning or tone. Check the differences above before substituting.