not possible; unable to be, exist, happen, etc.
unable to be done, performed, effected, etc.: an impossible assignment.
incapable of being true, as a rumor.
not to be done, endured, etc., with any degree of reason or propriety: an impossible situation.
utterly impracticable: an impossible plan.
hopelessly unsuitable, difficult, or objectionable.
- im·pos·si·ble·ness, noun
- im·pos·si·bly, adverb
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2023
How to use impossible in a sentence
In private, she said, Pence would say the “right things” in calls to governors and “was in an impossible situation with the president.”Former Pence aide says she will vote for Biden because of Trump’s ‘flat out disregard for human life’ during pandemic | Josh Dawsey | September 17, 2020 | Washington Post
Putting a set of those on a 400cc Polaris Sportsman made an incredible difference in performance, and made it almost impossible to get stuck unless I was high centered.
That’s not an impossible proportion of people to get into the streets — particularly if the activists doing the work get funded.Want to fight climate change effectively? Here’s where to donate your money. | Sigal Samuel | September 17, 2020 | Vox
It is virtually impossible that he had all the same information as the actual president.Trump’s increasingly overt effort to pretend Biden is actually president | Aaron Blake | September 16, 2020 | Washington Post
Past research suggests the planet may have active volcanism and may have once been home to shallow oceans, but the inability to map the surface optically has made it impossible to verify these theories so far.
Which is impossible unless people talk publicly rather than letting each crime be its own isolated incident.Cover-Ups and Concern Trolls: Actually, It's About Ethics in Suicide Journalism | Arthur Chu | January 3, 2015 | THE DAILY BEAST
But an ad-supported version of Desert Golfing was impossible.Lost For Thousands of Strokes: 'Desert Golfing' Is 'Angry Birds' as Modern Art | Alec Kubas-Meyer | January 2, 2015 | THE DAILY BEAST
It is impossible to calculate the full effect that watching this on television, listening on the radio must have had on Sam.How Martin Luther King Jr. Influenced Sam Cooke’s ‘A Change Is Gonna Come’ | Peter Guralnick | December 28, 2014 | THE DAILY BEAST
Aside from a blanket ban, social media platforms like Twitter, Facebook, and Reddit are nearly impossible to control.
Memorable songs that are impossible to get out of your head?
Adequate conception of the extent, the variety, the excellence of the works of Art here heaped together is impossible.Glances at Europe | Horace Greeley
But what might have been very practicable for eight hundred and sixty men, was impossible for three hundred and sixty.
It is impossible to believe that thus far it is anything but a sketch and intimation of what it will presently be.The Salvaging Of Civilisation | H. G. (Herbert George) Wells
On the other hand, I could not bring myself by lengthy or impossible quotations to vilify Duns.The Mediaeval Mind (Volume II of II) | Henry Osborn Taylor
This is secured only by right objects of thought; it is impossible to reach it by voluntary mechanics.Expressive Voice Culture | Jessie Eldridge Southwick
British Dictionary definitions for impossible
incapable of being done, undertaken, or experienced
incapable of occurring or happening
absurd or inconceivable; unreasonable: it's impossible to think of him as a bishop
informal intolerable; outrageous: those children are impossible
- impossibleness, noun
- impossibly, adverb
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012