1. (

• impossible

) something that cannot be done; "his assignment verged on the impossible" ;

1. (

• impossible

) not capable of occurring or being accomplished or dealt with; "an impossible dream"; "an impossible situation" ;

2. (

• impossible ,
• inconceivable ,
• out_of_the_question ,
• unimaginable

) totally unlikely ;

3. (

• impossible ,
• unacceptable

) (used of persons or their behavior) not acceptable or reasonable; "impossible behavior" ;