How many letters does the top answer for “deep feeling or emotion” have?

The most common answer is soulfulness (11 letters).

Crossword clue: deep feeling or emotion

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

soulfulness 11 letters wn-def

deep feeling or emotion

a feeling of deep longing 50% similar → pining

a feeling of deep regret 50% similar → compunction, remorse

a strong feeling or emotion 50% similar → passion, passionateness

mixed feelings or emotions 50% similar → ambivalence, ambivalency