Crossword Clue:

Politely refuse an invitation or offer

AnswerCrossword Clue
SENDREGRETSPolitely decline an invitation.
PRIORENGAGEMENTReason to refuse an invitation
ASKOffer an invitation to
SAYNORefuse an offer
TEMPTSMakes an offer that's hard to refuse
DONQUOTE"Make him an offer he can't refuse," e.g.?
PACINOActor who said "I'll make him an offer he can't refuse"