Word Study
dunning (root: dun)
THESAURUS
dunning
blandishment, buttonholing, cajolement, cajolery, cajoling, coaxing, demanding, importunate, importunateness, importunity, insistent, nagging, pestering, plaguing, plying, pressing, pressure, teasing, urgency, urgent, urging, wheedling
For further exploring for "dunning" in Webster Dictionary Online