Adjective: improbable im'pró-bu-bul
- Not likely to be true or to occur or to have occurred
"an improbable event";
- unlikely
- Having a probability too low to inspire belief
"The improbable story seemed too far-fetched";
- unbelievable, unconvincing, unlikely, doubtful
- Too improbable to admit of belief
"His improbable story about meeting aliens convinced no one";
- marvelous [US], marvellous [Brit, Cdn], tall
See also: implausible, incredible, supposed, unbelievable
Antonym: probable
Encyclopedia: Improbable