rigidity (n.)
- absoluteness
- accuracy
- changelessness
- concentration
- constancy
- correctness
- delicacy
- durability
- duration
- endurance
- exactitude
- exactness
- faithfulness
- faultlessness
- fidelity
- fineness
- firmness
- fixedness
- flawlessness
- fundamentalism
- grimness
- hardening
- hardness
- immobility
- immobilization
- immovability
- immovableness
- immutability
- inelasticity
- inertia
- inexorability
- inflexibility
- intransigence
- intransigency
- invariability
- invariableness
- lastingness
- literalism
- literalness
- loyalty
- meticulousness
- niceness
- nicety
- obduracy
- obstinacy
- orthodoxy
- perfection
- permanence
- permanency
- persistence
- persistency
- preciseness
- precision
- purism
- puritanism
- quiescence
- refinement
- relentlessness
- right
- rightness
- rigidness
- rigor
- rigorousness
- severity
- solidity
- stability
- standing
- stasis
- staunchness
- steadfastness
- steadiness
- sternness
- stiffness
- strictness
- stubbornness
- subtlety
- tautness
- tenseness
- tension
- tensity
- textualism
- tightness
- torpor
- toughness
- trueness
- unalterability
- unchangeability
- unchangingness
- unyieldingness
