The archaeologist dismissed the theory as implausible, noting that no ancient civilization could have transported such massive stones without advanced machinery.
考古学家认为这一理论不合情理，指出没有古代文明能在没有先进机械的情况下搬运如此巨大的石块。
Which choice best defines “implausible”?
D — Not believable. “implausible” means not believable.
Which word means “not believable”?
D — implausible. “implausible” means not believable.
implausible — not believable. In Chinese: 不合情理的，难以置信的.
implausible is pronounced /ɪmˈplɔːzəbl/.
The archaeologist dismissed the theory as implausible, noting that no ancient civilization could have transported such massive stones without advanced machinery. (考古学家认为这一理论不合情理，指出没有古代文明能在没有先进机械的情况下搬运如此巨大的石块。)
unbelievable, incredible, far-fetched — all close in meaning to implausible (not believable).
plausible, believable — each the opposite of implausible (not believable).
Yes. implausible is on the SAT Prep Easy list — mid-frequency academic words that do get tested. The Digital SAT does not test vocabulary in isolation; words like this one are tested through Words in Context questions, where you choose the word that completes a passage most logically and precisely.
im(not)+plausible(believable)