"inconstant affections"; "an inconstant lover"; "swear not by...the inconstant moon"- Shakespeare
is similar to
(used especially of persons) not dependable in devotion or affection; unfaithful
"a false friend"; "when lovers prove untrue"
is similar to
marked by erratic changeableness in affections or attachments
"fickle friends"; "a flirt's volatile affections"
see also
such that alteration is possible; having a marked tendency to change
"changeable behavior"; "changeable moods"; "changeable prices"
see also
not true to duty or obligation or promises
"an unfaithful lover"
see also
lacking stability or fixity or firmness
"unstable political conditions"; "the tower proved to be unstable in the high wind"; "an unstable world economy"
see also
liable to or capable of change
"rainfall in the tropics is notoriously variable"; "variable winds"; "variable expenses"
see also
evaporating readily at normal temperatures and pressures
"volatile oils"; "volatile solvents"
is an attribute of
the quality of being enduring and free from change or variation
"early mariners relied on the constancy of the trade winds"