Want to say soundness differently? Here are other words for soundness and its similar synonyms and opposite words to say in unique way.
Meaning of soundness
The primary meaning of the word "soundness" refers to the quality of being strong, stable, and free from defect or flaw.
Etymology of soundness
The word "soundness" originates from the Old English word "sund" meaning "healthy" or "whole", and the suffix "-ness" which forms a noun indicating a state or quality.
   Historically, the word has been used to describe physical and mental health, as well as the validity and reliability of ideas or structures.
Synonyms
                                                stability
                                                                        solidity
                                                                        firmness
                                                                        robustness
                                                                        sturdiness
                                                                        durability
                                                                        integrity
                                                                        validity
                                                                        goodness
                                                                        healthiness
                                                                        wholesomeness
                                                                        correctness
                                                                        accuracy
                                                                        precision
                                                                        reliability
                                                                        dependability
                                                                        trustworthiness
                                                                        strength
                                                                        vigor
                                                                        vitality
                                                                        resilience
                                                                        hardness
                                                                        toughness
                                                                        sound
                                                                        validity
                                                                        legitimacy
                                                                        authenticity
                                                                        genuineness
                                                                        sincerity
                                                                        truthfulness
                                                                        factuality
                                                                        actuality
                                                                        actualness
                                                            
            Definitions
- The quality of being based on valid reasoning or evidence
- * The quality of being strong and able to withstand strain or pressure
- * The state of being free from defect or flaw
Usage Examples
- The soundness of the building's foundation ensured its stability during the earthquake.
- * The researcher's argument was questioned due to the lack of soundness in her methodology.
- * The soundness of the company's financial records was verified by the auditor.
Antonyms
                                                instability
                                                                        fragility
                                                                        weakness
                                                                        flaw
                                                                        defect
                                                                        imperfection
                                                                        unsoundness
                                                                        invalidity
                                                                        incorrectness
                                                                        inaccuracy
                                                                        unreliability
                                                                        undependability
                                                                        untrustworthiness
                                                                        softness
                                                                        frailty
                                                                        vulnerability
                                                                        shakiness
                                                                        unsteadiness
                                                                        uncertainty
                                                                        doubtfulness