infeasible
Americanadjective
adjective
Other Word Forms
- infeasibility noun
- infeasibleness noun
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.
In these cases, no randomized trial will be required because it’s simply infeasible.
From The Wall Street Journal • Feb. 23, 2026
Smith, speaking to The Times, stressed that the new guidelines only apply to situations where the Fire Department has deemed evacuations infeasible.
From Los Angeles Times • Nov. 24, 2025
"When it gets to the stage where it's out of control like honeysuckle, you get to a breaking point where it's just infeasible to deal with it."
From Science Daily • Dec. 1, 2023
It’s incredible progress on a task that was thought infeasible just a few years ago, says Aditya Grover, an AI researcher at the University of California, Los Angeles.
From Science Magazine • Nov. 14, 2023
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 Filon, Auguston
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.
