How many letters does the top answer for “friendliness evidence by a kindly and helpful disposition” have?

The most common answer is helpfulness (11 letters).

Crossword clue: friendliness evidence by a kindly and helpful disposition

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

helpfulness 11 letters wn-def

friendliness evidence by a kindly and helpful disposition

kindliness 10 letters wn-def

friendliness evidence by a kindly and helpful disposition