implausible
AdjectiveUS[im-plaw-zuh-buhl]/ˌɪmˈplɔzəbəl/4 syllables
Open English WordNet
Adjective (1)
- having a quality that provokes disbelief“gave the teacher an implausible excuse”Opposite plausibleSimilar cockamamie, farfetched, improbableSee also incredible, unbelievable
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Webster's Dictionary (1913)
Im·plau′si·ble adjective
Origin: Pref. im- not + plausible: cf. F. implausible.
Not plausible; not wearing the appearance of truth or credibility, and not likely to be believed. “Implausible harangues.” Jonathan Swift
— Im·plau′wb-a1′>′si·ble·ness, noun — Im·plau′wb-a1′>′si·bly, adverb
Webster’s Revised Unabridged Dictionary (1913), from GCIDE 0.54