Word.ws English Dictionary

Synonyms of insubstantial

8 similar words · 1 opposite word

Another word for insubstantial is immaterial. Other synonyms of insubstantial are ethereal and tenuous. The opposite of insubstantial is substantial.

Synonyms and similar words for insubstantial

adjectiveLacking substance; not real or strong.

  • airy
  • aeryAerial; ethereal; incorporeal; visionary.
  • etherealPertaining to the immaterial realm, as symbolically represented by, or (in earlier epochs) conflated with, such...
  • diaphanous formalOf a fine, almost transparent, texture; gossamer; light and insubstantial.
  • immaterialHaving no matter or substance; incorporeal.
  • tenuousInsubstantial.
  • unreal
  • unsubstantial archaicInsubstantial.

Opposite of insubstantial

adjectiveMore antonyms

Meaning of insubstantial

  1. adjective Lacking substance; not real or strong.

Full definition of insubstantial

insubstantial in other languages

Questions about synonyms of insubstantial

What is another word for insubstantial?
Insubstantial has 8 synonyms on Word.ws, such as immaterial, ethereal and tenuous.
What is the opposite of insubstantial?
The opposite of insubstantial is substantial.
What does insubstantial mean?
Insubstantial means lacking substance; not real or strong.

Source and license

Adapted from Wiktionary: insubstantial (page history and authors) and the entries of the words listed. Text available under the Creative Commons Attribution-ShareAlike 4.0 license. Word.ws grouped the synonyms and antonyms by meaning and added links. Wiktionary data of 2026-09-02.

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Cite this page: “Synonyms of insubstantial.” Word.ws, https://word.ws/synonyms/insubstantial. Based on Wiktionary, CC BY-SA 4.0.