infeasible
Americanadjective
adjective
Other Word Forms
Etymology
Origin of infeasible
Explanation
Infeasible things are impossible, or too complicated to actually be done. Your idea of staging a city-wide game of Capture the Flag is probably infeasible. After several frustrating attempts at walking your cat around the neighborhood on a leash, you might finally decide the idea is infeasible — it's just not going to work the way you imagined. When something is feasible, it's entirely possible. Feasible comes from the Old French faisable, "that may be done," from the Latin root facere, "to make or do." When you add the "not" prefix in-, you get infeasible.
Example Sentences
Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.
The Environment Agency told the Cunliffe Review that "the treatment costs of meeting 'good' may render the new reservoirs infeasible".
From BBC ● Aug. 29, 2026
He insists that a June 5 invasion will fail because of high waves and low clouds that would make air support infeasible.
From The Wall Street Journal ● May 28, 2026
In the mid-aughts, the team decided another refresh was infeasible and opted for a teardown instead of a remodel.
From Los Angeles Times ● Oct. 28, 2024
Kim noted that this feature is desirable in applications where cleaning and maintaining parts is expensive or infeasible.
From Science Daily ● Apr. 17, 2024
The footlights seem an obstacle which it is impossible to surmount; possession appears an infeasible, madly absurd dream, the very thought of which produces vertigo.
From Garrick's Pupil by Auguston Filon
Definitions and idiom definitions from Dictionary.com Unabridged, based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
Idioms from The American Heritage® Idioms Dictionary copyright © 2002, 2001, 1995 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company.
