Thesaurus.com
Dictionary.com
Showing results for impossible. Search instead for impossiblenes.
Definitions

impossible

[im-pos-uh-buhl] / ɪmˈpɒs ə bəl /
ADJECTIVE
beyond the bounds of possibility
Synonyms
STRONGEST
absurd futile hopeless impassable impractical inaccessible inconceivable insurmountable preposterous unattainable unimaginable unreasonable unthinkable unworkable useless
STRONG
visionary
WEAK
beyond contrary to reason cureless hardly possible hundred-to-one impervious impracticable inexecutable infeasible irrealizable irreparable no-go no-win not a prayer out of the question too much unachievable uncorrectable unfeasible unobtainable unrecoverable way-out
Antonyms
STRONGEST
believable conceivable hopeful imaginable logical practical reasonable sensible
WEAK
achievable obtainable possible
ADJECTIVE
intolerable, ungovernable
Synonyms
STRONGEST
absurd hopeless ludicrous outrageous preposterous unacceptable unreasonable
STRONG
offensive undesirable
WEAK
egregious improper incongruous objectionable unanswerable unsuitable
Antonyms
STRONGEST
acceptable
STRONG
pleasing
WEAK
achievable believable governable manageable tenable tolerable

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 2023, scientists detected a subatomic particle called a neutrino hitting Earth with an energy level so extreme it seemed impossible.

From Science Daily • Apr. 8, 2026

It's impossible to be definitive, because there was only one lap after Russell stopped before the safety car was called.

From BBC • Apr. 7, 2026

“These legal battles waste critical government resources and make it impossible for energy companies to plan and invest in new projects,” Hegseth told the committee.

From Salon • Apr. 7, 2026

I feel sorry for Fed Chair Jerome Powell because he is in this impossible situation.

From Barron's • Apr. 7, 2026

She’s either loving or leaving Anchorage—it’s impossible to read with the gray stamp covering half the word.

From "South of Somewhere" by Kalena Miller