nieprawdopodobny

Etymology
From.

Adjective

 * 1) implausible, improbable, incredible, unlikely
 * 2) impossible
 * 3) incredible, jaw-dropping, unbelievable, unthinkable
 * 1) impossible
 * 2) incredible, jaw-dropping, unbelievable, unthinkable
 * 1) incredible, jaw-dropping, unbelievable, unthinkable