improbable
UK /ɪmˈpɹɒbəbl̩/ · US /ɪmˈpɹɑbəbl̩/ adjective
- adjective Not likely to be true. “It's highly improbable that aliens abducted you.”
- adjective Not likely to happen. “Due to the loss of power, it is improbable that we will begin on time.”
Synonyms
unlikely unbelievable unconvincing marvelous marvellous tall
Antonyms
Etymology
Borrowed from Latin improbābilis. By surface analysis, im- + probable.
Webster’s 1913
- adjective Not probable; unlikely to be true; not to be expected under the circumstances or in the usual course of events; as, an improbable story or event.
Etymology [L. improbabilis; pref. im- not + probabilis probable: cf. F. improbable. See Probable.]
Sources: Wiktionary · WordNet 3.0 · Webster’s 1913 — from the Wiktionary entry “improbable”, CC BY-SA 4.0. Details