Found 88 synonyms in 12 groups
  1. 1
    Meaning: little
  1. 2
    Meaning: slight
  2. 4
    Meaning: dangerous
  3. 5
    Meaning: ethereal
  4. 6
    Meaning: fallacious
  5. 7
    Meaning: quantity
  6. 8
    Meaning: ineffectual
  7. 9
    Meaning: property
  8. 10
    Meaning: amount
    meagre inconsiderable unsubstantial slight
  9. 11
    Meaning: implausible
    unsubstantial flimsy weak thin incredible
  10. 12
    Meaning: delicate
    thin unsubstantial airy

unsubstantial synonyms - English related words for unsubstantial