improbable

Borrowed from Middle French improbable, from im- +‎ probable.

improbable (comparative more improbable, superlative most improbable)

1. Not likely to be true.

   It's highly improbable that aliens abducted you.

2. Not likely to happen.

   Due to the loss of power, it is improbable that we will begin on time.

• probable

• impossible

improbable (masculine and feminine plural improbables)

1. improbable, unlikely

   Antonym: probable

• improbablement

• improbabilitat

• “improbable” in Diccionari de la llengua catalana, segona edició, Institut d’Estudis Catalans.
• “improbable” in Gran Diccionari de la Llengua Catalana, Grup Enciclopèdia Catalana.
• “improbable” in Diccionari normatiu valencià, Acadèmia Valenciana de la Llengua.
• “improbable” in Diccionari català-valencià-balear, Antoni Maria Alcover and Francesc de Borja Moll, 1962.

From im- +‎ probable.

• IPA^(key): /ɛ̃.pʁɔ.babl/

improbable (plural improbables)

1. unlikely, improbable (not likely)

   Synonym: peu probable

• “improbable” in le Trésor de la langue française informatisé (The Digitized Treasury of the French Language).

improbable (plural improbables)

1. improbable, unlikely

   Antonym: probable

• “improbable” in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014.