Definition of valedictory:

part of speech: noun

An oration or address delivered on bidding farewell.

part of speech: adjective

Bidding farewell.

Usage examples:

• " I'd rather have the valedictory address than- clothes," still very uncertain of lip. Fannie Hurst in "Star-Dust A Story of an American Girl".

• At any rate, taking the doctor's cheerful valedictory for a text, I might preach a little bit of a sermon on the best way of getting old. T. De Witt Talmage in "Around The Tea-Table".

• For an instant the patrolman seemed on the point of bursting into a valedictory of abuse- even of attack- but he thought better of it, and as he went out there was a shamble in the step that had swaggered. Charles Neville Buck in "The Tempering".