adaptable
changeable
covariant
multivariate
protean
shifting
uncertain
unsettled
variant
varied
versatile
able to adapt
adjustable
adrift
afloat
agnostic
alterable
alterative
alternating
ambiguous
amorphous
broken
capricious
careening
catchy
chancy
changeful
changing
checkered
choppy
desultory
deviable
deviating
deviative
deviatory
dicey
different
disconnected
discontinuous
disorderly
divaricate
divergent
diversified
diversiform
dizzy
doubting
eccentric
equivocal
erose
erratic
ever-changing
fast and loose
fickle
fitful
flexible
thing
characteristic
constant
current
data
dynamic
factor
input
maximum
parameter
specific
vector
invariable