Adjective
1. evaporating readily at normal temperatures and pressures;
"volatile oils""volatile solvents"2. liable to lead to sudden change or violence;
"an explosive issue""a volatile situation with troops and rioters eager for a confrontation"3. marked by erratic changeableness in affections or attachments;
"fickle friends""a flirt's volatile affections"4. tending to vary often or widely;
"volatile stocks""volatile emotions"