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

The most common answer is passion (7 letters).

Crossword clue: a strong feeling or emotion

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

passion 7 letters wn-def

a strong feeling or emotion

passionateness 14 letters wn-def

a strong feeling or emotion

a feeling of strong eagerness 50% similar → ardor

deep feeling or emotion 50% similar → soulfulness

mixed feelings or emotions 50% similar → ambivalence, ambivalency

strong feelings of dislike 50% similar → disgust

strong feelings of embarrassment 50% similar → chagrin, humiliation, mortification