solidness

Noun

• the quality of being solid and reliable financially or factually or morally
  • the solidity of the evidence worked in his favor
    
  • the solidness of her faith gave her enduring hope
    

• the quality of being substantial or having substance

• the consistency of a solid

• the state in which a substance has no tendency to flow under moderate stress; resists forces (such as compression) that tend to deform it; and retains a definite size and shape

Related words

• Synonyms: 
  solidity , substantiality , substantialness , solid , solid state
• Antonyms: 
  insubstantiality , porosity , porousness