How do you spell Definitive

Available Definitions:
1)  a. - Determinate; positive; final; conclusive; unconditional; express.
2)  a. - Limiting; determining; as, a definitive word.
3)  a. - Determined; resolved.
4)  n. - A word used to define or limit the extent of the signification of a common noun, such as the definite article, and some pronouns.