Definition of unsubstantial
- unsubstantial shadows
as thin and unsubstantial as the wind
an unsubstantial child who was unfit to play sports of any kind
These example sentences are selected automatically from various online news sources to reflect current usage of the word 'unsubstantial.' Views expressed in the examples do not represent the opinion of Merriam-Webster or its editors. Send us feedback.
Thesaurus: All synonyms and antonyms for unsubstantial
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