A new new word or two

Definitivity - the state of being definite, usually in relation to something that doesn't matter.

Example:

Man 1: I was told definitively that the meeting was in the conference room.
Man 2: Well, it isn't. You should be wary of such definitivity.

Or:

Man: You know, sky blue? Like the sky.
Woman: Ironically the sky is not really sky blue. It's an azure.
Man: I wish I lived in such a state of definitivity.

See? It's easy.

However, do not confuse DEFINITIVITY with DEFINATIVITY.

Definativity - (adj) the state of definitely looking like the Nativity from the gospels.

Example:

I thought the burn on my toast had a high degree of definativity, but my minister disagreed.

More often it is seen as an adverb:

The trash cans were arranged definativityly, with the recycling as the manger and the mailbox as a shepherd.