volatile (v l -tl, -t l )adj
1.a.Tending to vary often or widely, as in price: the ups and downs of volatile stocks. b.Inconstant; fickle: a flirt's volatile affections. c.Lighthearted; flighty: in a volatile mood. d.Ephemeral; fleeting. 3.Tending to violence; explosive: a volatile situation with troops and rioters eager for a confrontation. 4.Flying or capable of flying; volant.