Implausible
Pronunciation : Im*plau"si*ble
Part of Speech : a.
Etymology : [Pref. im- not + plausible: cf. F. implausible.]
Definition : Defn: Not plausible; not wearing the appearance of truth or credibility, and not likely to be believed. "Implausible harangues." Swift. -- Im*plau"si*ble*ness, n. -- Im*plau"si*bly, adv.
Source : Webster's Unabridged Dictionary, 1913