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.
Instead, they said that market and financial conditions had changed, rendering the plans infeasible, according to a letter sent by Ofland’s attorney to the city of Twentynine Palms last week.
From Los Angeles Times • Apr. 30, 2026
In these cases, no randomized trial will be required because it’s simply infeasible.
From The Wall Street Journal • Feb. 23, 2026
"If banning AI deception is politically infeasible at the current moment, we recommend that deceptive AI systems be classified as high risk," says Park.
From Science Daily • May 10, 2024
Gillian Paull, from Frontier Economics, says the increase is likely to be "challenging", as providers face financial strains and difficulty recruiting staff, "but not infeasible".
From BBC • Nov. 16, 2023
Note that Arrow adopts feasibility, but also wants to impose infeasible conditions.
From Definition & Reality in the General Theory of Political Economy by Colignatus, Thomas
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.
