implausible

/ɪmplˈɔːzəbə‍l/

/ˌɪmˈpɫɔzəbəɫ/

[adjective]

implausible

[ADJECTIVE]

not seeming believable or reasonable enough to be considered true

antonyms : plausible

Examples

1. Acknowledging that a drowning man will clutch at a straw, the defendant grasped at the flimsy alibi even though it appeared implausible, hoping it might provide some reprieve from the charges against him.

2. Sounds implausible.

3. They're all very implausible.

4. It is not implausible.