How many letters does the top answer for “the act of urging by means of teasing or flattery” have?

The most common answer is blandishment (12 letters).

Crossword clue: the act of urging by means of teasing or flattery

2 answers found in Letterora's clue database (Wikidata facts, Open Trivia DB, WordNet and Webster definitions — all licensed sources).

blandishment 12 letters wn-def

the act of urging by means of teasing or flattery

wheedling 9 letters wn-def

the act of urging by means of teasing or flattery