Simple Definition of impossible
: unable to be done or to happen : not possible
: very difficult
of a person : very difficult to deal with : very irritating or annoying
Full Definition of impossible
1 a : incapable of being or of occurring b : felt to be incapable of being done, attained, or fulfilled : insuperably difficult <an impossible deadline>
2 a : extremely undesirable : unacceptable b : extremely awkward or difficult to deal with <the actor was impossible on the set>
Examples of impossible
It's impossible to predict the future.
The heavy rain made it impossible to see the road.
It's physically impossible for a child to lift that much at once.
It's virtually impossible to book a flight just before the holiday.
These math problems are impossible!
You refuse to help and then criticize me for not doing it right? You're impossible!
My boss is just an impossible woman.
Origin of impossible
Middle English, from Anglo-French & Latin; Anglo-French, from Latin impossibilis, from in- + possibilis possible
First Known Use: 14th century
Seen and Heard
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