- soundness - a state or condition free from damage or decay
--1 is a kind of condition, status
Antonyms: unsoundness
--1 has particulars: seaworthiness, fitness; airworthiness - wisdom, wiseness, soundness - the quality of being prudent and sensible
--2 is a kind of good, goodness
--2 has particulars: advisability; reasonableness - firmness, soundness - the firmness and tone of healthy tissue; "his muscle firmness"
--3 is a kind of strength