Unsubstantial Unsubstantial synonyms insubstantial unsubstantial and insubstantial immaterial unsubstantial and immaterial unreal unsubstantial and unreal incorporeal unsubstantial and incorporeal flimsy unsubstantial and flimsy frail unsubstantial and frail ethereal unsubstantial and ethereal bodiless unsubstantial and bodiless thin unsubstantial and thin weak unsubstantial and weak Full list of synonyms (1001) Unsubstantial antonyms substantial unsubstantial and substantial material unsubstantial and material strong unsubstantial and strong corporeal unsubstantial and corporeal real unsubstantial and real sturdy unsubstantial and sturdy undeniable unsubstantial and undeniable stout unsubstantial and stout stalwart unsubstantial and stalwart rugged unsubstantial and rugged Full list of antonyms (70) Share this picture Share this image Share this picture Share this image