firmness Synonyms

firmness of purpose soundness constancy resolve resolution resoluteness steadiness stanchness stalwartness staidness staunchness steadfastness sternness stiffness stoutness strength strictness stringency sturdiness pluck stableness pluckiness purpose resistibility rigidity robustness secureness self-will settledness solidity solidness spunk stability substantiality tenacity bendability candlepower runniness bullheadedness obstinance intransigence purposefulness relentlessness impermeableness fundamentalism decisiveness predictability specific gravity resolving power guts