the state or quality of being stable.

firmness in position.

continuance without change; permanence.

Chemistry . resistance or the degree of resistance to chemical change or disintegration.

resistance to change, esp. sudden change or deterioration

The stability of the economy encourages investment.

steadfastness; constancy, as of character or purpose

The job calls for a great deal of emotional stability.

Aeronautics . the ability of an aircraft to return to its original flying position when abruptly displaced.

Roman Catholic Church . a vow taken by a Benedictine monk, binding him to residence for life in the same monastery in which he made the vow.

noun

insecurity , instability , unsteadiness , variability , wavering

noun

adherence , aplomb , assurance , backbone , balance , cohesion , constancy , dependability , determination , durability , endurance , establishment , firmness , immobility , immovability , maturity , permanence , perseverance , resoluteness , security , solidity , solidness , soundness , stableness , steadfastness , steadiness , strength , substantiality , support , toughness , integrity , wholeness , fastness , hardness , sturdiness , sureness , equilibrium , fixedness , homeostasis , plateau , poise , quo , reliability , status