Pronunciation: (di-sī'siv), [key]
1. having the power or quality of deciding; putting an end to controversy; crucial or most important: Your argument was the decisive one.
2. characterized by or displaying no or little hesitation; resolute; determined: The general was known for his decisive manner.
3. indisputable; definite: a decisive defeat.
4. unsurpassable; commanding: a decisive lead in the voting.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.