IMPROBABILITY, IMPROBABLE
ADJECTIVES
► UNBEELIKE improbable → .1846 Sc.
► UNLIKE unlikely, improbable → 1905 Eng. dial. (Bk.)
NOUNS
► INVERISIMILITUDE unlikelihood; improbability → E19
► MARVELLOUS, THE that which is prodigious or extravagantly improbable → 1749
VERBS
► BACK UP A CAR LENGTH to be thus addressed signifies that your tale is improbable and should be modified → 1897 Amer. dial.
► TAKE THE CAKE to be highly improbable → 1960s sl.