adj
implausible
adj
1
Hard to believe; unlikely to be true.
"The alibi sounded implausible from the start."
"Critics found the film's plot twist wildly implausible."
How to Use Implausible
Learner’s notesIn plain EnglishNot believable — a story or explanation that seems unlikely.
Easily confused with
implausibly
Common pairings
implausible excuse
implausible plot
Word Forms
more implausible comparative, most implausible superlative
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The alibi sounded _____ from the start.
Etymology
From im- ("not") + plausible.