* Simple and direct: The detective dismissed the witness's story as implausible, full of inconsistencies and unlikely details.
* With emphasis on the lack of believability: The idea that the Earth is flat is implausible, contradicted by overwhelming scientific evidence.
* In a humorous context: Her excuse for being late was so implausible, even she couldn't keep a straight face.
* To highlight a surprising occurrence: Despite the implausible odds, the underdog team pulled off a stunning victory.
* In a literary context: The author crafted a plot twist so implausible, it left the reader gasping for air.
Remember that "implausible" implies a lack of believability, often due to being illogical or improbable.