Adjective: decisive di'sI-siv
- Determining or having the power to determine an outcome
"cast the decisive vote"; "two factors had a decisive influence"
"had a decisive lead in the polls"
- Characterized by decision and firmness
"an able and decisive young woman"; "we needed decisive leadership"; "she gave him a decisive answer"
- Forming or having the nature of a turning point or crisis
"a decisive point in the campaign";
- critical, climacteric
See also: conclusive, crucial, deciding, definite, determinant, determinative, determining, fatal, fateful, important, peremptory, resolute, unhesitating