Synonyms for Blarney (same or very similar meaning)
WordNet sense 1 (flattery designed to gain favor):
coaxing, soft soapWordNet sense 2 (influence or urge by gentle urging, caressing, or flattering):
cajole, coax, inveigle, palaver, sweet-talk, wheedle, coaxFrom the ODE community, based on WordNetadd/edit