unstable (adjective) unstable: doubtful
Sinonime: ambiguous, borderline,
capricious,
changeable,
dizzy,
dubious,
erratic,
fickle, fitful, fluctuating,
giddy,
inconsistent, inconstant,
insecure,
irrational, lubricious,
mercurial,
mobile, movable,
moving, mutable, not fixed,
precarious, rickety,
risky, rocky,
sensitive,
shaky, shifty,
slippery,
suspect, teetering,
temperamental, ticklish,
tricky,
uncertain,
unpredictable,
unsettled, unsteady,
untrustworthy,
vacillating,
variable,
volatile,
wavering,
weak, weaving, wiggly, wobbly
Antonime: stable,
steady,
strong