plausible

Plausbile

apparently reasonable, valid, or truthful

似てるけど違う…
Possible = can be true
Plausible = likely to be true

例
Trump's incoming hostage affairs envoy says it's 'plausible' they'll free hostages 'very soon'
トランプ政権の人質担当が、”非常に近いうちに”本当に人質を解放できる模様だと発言。

ココで・・・　incoming… upcomingに似てるが違う‥‥
"Incoming" means something is arriving or will arrive soon, while "upcoming" means something is scheduled to happen soon:

例　もっと簡単な例で行くと…
How can i make a plausible excure for being late for work?

Implausible

The basketball star makes implausbile return from sickening broken leg.
     sickの動詞があるのねえ。causing or able to cause nausea

Bans on electric cars and solar panels? It’s not so implausible