Antonyms of noun substantiality

1 sense of substantiality

Sense 1
substantiality, substantialness, solidness -- (the quality of being substantial or having substance)
       Antonym of insubstantiality (Sense 2)
      => insubstantiality -- (lacking substance or reality)

Synonyms/Hypernyms (Ordered by Estimated Frequency) of noun substantiality

1 sense of substantiality

Sense 1
substantiality, substantialness, solidness -- (the quality of being substantial or having substance)
       => materiality, physicalness, corporeality, corporality -- (the quality of being physical; consisting of matter)