Found 88 synonyms in 12 groups
  1. 2
    Meaning: slight
  2. 5
    Meaning: ethereal
  1. 8
    Meaning: ineffectual
  2. 10
    Meaning: amount
  3. 11
    Meaning: implausible
  4. 12
    Meaning: delicate

unsubstantial synonyms - English related words for unsubstantial