Crossword clue: quality or state of being volatile; disposition to evaporate; changeableness; fickleness.

The most common answer is volatileness (12 letters).

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

Possible answers

volatileness 12 letters web-def

Quality or state of being volatile; disposition to evaporate; changeableness; fickleness.

volatility 10 letters web-def

being easily excited