Substantial means large in amount, size, or importance, or solid and strong enough to be considered real and serious.
From Latin 'substantialis' meaning 'of substance, essential', from 'substantia' (substance). It originally emphasized something’s real, solid existence.
Calling something 'substantial' is like saying, 'This isn’t just fluff—there’s real weight here.' Whether it’s a 'substantial meal' or 'substantial evidence', the word quietly points to something you can rely on.
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