How many letters does the top answer for “an exceptional interest in and admiration for yourself” have?

The most common answer is narcism (7 letters).

Crossword clue: an exceptional interest in and admiration for yourself

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

narcism 7 letters wn-def

an exceptional interest in and admiration for yourself

narcissism 10 letters wn-def

an exceptional interest in and admiration for yourself