Definition of implausible
Adjectives
having a quality that provokes disbelief
"gave the teacher an implausible excuse"
- Synonyms:
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incredible, unbelievable
beyond belief or understanding
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improbable, unconvincing, unlikely
having a probability too low to inspire belief
- Antonyms:
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plausible
apparently reasonable and valid, and truthful
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believable, credible
capable of being believed
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arguable
capable of being supported by argument
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glib, pat, slick
having only superficial plausibility
- show more antonyms...
highly imaginative but unlikely
"an implausible explanation"
- Synonyms:
- farfetched
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unlikely
has little chance of being the case or coming about

