How many letters does the top answer for “having or causing a whirling sensation; liable to falling” have?

The most common answer is vertiginous (11 letters).

Crossword clue: having or causing a whirling sensation; liable to falling

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

vertiginous 11 letters wn-def

having or causing a whirling sensation; liable to falling

woozy 5 letters wn-def

having or causing a whirling sensation; liable to falling