استحکام (اسم)
resistance, strength, substance, backbone, rigidity, stability, fortification, solidity, stableness, consistency, solidification, consistence, formidability, grit, granite, staying power
استواری (اسم)
constancy, backbone, stability, solidity, stableness, stabilization, fixity, formidability, fastness, immovability, impregnability
ثبات (اسم)
bookkeeper, constancy, recorder, fortitude, stability, stableness, poise, register, consistency, cataloger, cataloguer, fixity, consistence, immutability, grit, indelibility, permanency
پایداری (اسم)
resistance, durability, constancy, stability, stableness, fixity, endurance, permanency