- firmness
- n1. hardness, rigidity, solidity, resistance; toughness, callosity, callousness, durity; petrification, ossification, density, compactness; adamant, steel, iron; irresilience, inelasticity.2. stability, steadiness, constancy, balance; fixedness, immovableness, soundness, fastness; establishment, rootedness.3. immutability, unalterability, unchangeableness, invariability, fixity; irrevocability, irreversibility, indissolubility, irrepealability; durability, durableness, endurance, changelessness; abidingness, lastingness, continuance, perdurability, survival, duration.4. determination, resolution, steadfastness, tenacity, Inf. stick-to-it-iveness; resolve, fortitude, will, will power; mettle, backbone, courage, intrepidity, grit, nerve; drive, push, persistence, pertinacity, perseverance, doggedness; iron will, indomitability, relentlessness, inexorability; intransigence, obstinacy, stubbornness, obduracy.
A Note on the Style of the synonym finder. 2014.