1. (

• decisive

) determining or having the power to determine an outcome; "cast the decisive vote"; "two factors had a decisive influence" ;

2. (

• decisive

) unmistakable; "had a decisive lead in the polls" ;

3. (

• decisive ,

) characterized by decision and firmness; "an able and decisive young woman"; "we needed decisive leadership"; "she gave him a decisive answer" ;

4. (

• critical ,
• decisive

) forming or having the nature of a turning point or crisis; "a critical point in the campaign"; "the critical test" ;