Roget's Thesaurus

#473. Improbability

Nouns

improbability, unlikelihood; unfavorable chance, bad chance, ghost of a chance, little chance, small chance, poor chance, scarcely any chance, no chance; bare possibility; long odds; incredibility etc. 485.

Verbs

be improbable etc. adj.; have a small chance etc. n..

Adjectives

improbable, unlikely, contrary to all reasonable expectation; wild [Coll.], far out [Coll.], out of sight [Coll.], outtasight [Coll.], heavy [Coll.]. rare etc. (infrequent) 137; unheard of, inconceivable; unimaginable, inimaginable; incredible etc. 485; more than doubtful; strange, bizarre (uncomformable) 83.

Phrases

the chances are against; aquila non capit muscas [Lat.]; pedir peras pal olmo [Lat.].