Unlikely Scenarios

adjective not seeming reasonable or probable; not believable

• The idea of time travel is often seen as implausible by scientists.
• It seems pretty implausible that he would suddenly become a professional athlete overnight.
• That excuse is totally implausible, no one is going to believe it.
• Her story was so implausible that it felt like she was just making it up as she went along.

adjective not likely to happen or be true; unlikely

• The chances of success seemed improbable given the current circumstances.
• It's pretty improbable that we'll finish the project on time.
• Winning the lottery is like, totally improbable, dude.
• Her dream of becoming a famous singer felt increasingly improbable as she grew older.