nee verkopen

Etymology
lit. 'to sell no'.

Verb

 * 1)  To decline, say no.

Usage notes

 * Mostly encountered in the infinitive.
 * Has a connotation of a negative response that should include some form of justification (this expectation of justification being implicit in the verb verkopen, meaning "to sell"); it implies that the addressee would be disappointed or unpleasantly surprised by the negative response.