n. 25B6; noun
the stability of play equipment : FIRMNESS, solidity, steadiness, strength, security, safety.
his mental stability : BALANCE OF MIND, mental health, sanity, normality, soundness, rationality, reason, sense.
the stability of their relationship : STEADINESS, firmness, solidity, strength, durability, lasting nature, enduring nature, permanence, changelessness, invariability, immutability, indestructibility, reliability, dependability.