the.com/unstable
One nudge from chaos, perpetually auditioning for the role of disaster.
means Liable to change, collapse, or break down without warning; lacking firm balance or reliability.
from From Latin instabilis, un- (not) plus stabilis (standing firm) — literally unable to stand up straight.
ChemistryUnstable atoms decay, spitting radiation to reach calm.
PhysicsA pencil on its tip: unstable equilibrium.
SpectrumOpposite of stable, cousin to volatile and precarious.