adjective

substantial

substantial, considerable, significant, solid

He made a substantial amount of money.

He made a substantial amount of money.

The house is very substantial.

The house is very substantial.

There are substantial differences between the two plans.

There are substantial differences between the two plans.

((a/an)) substantial ((noun)) large in amount, value, or importance He made a substantial amount of money.

((to be)) substantial strongly and solidly built The house is very substantial.

Synonyms: considerable, significant, large, solid; Antonyms: insubstantial, minor, flimsy

From 'substance' + the adjective-forming suffix '-ial'. It means relating to or having substance.

If something has 'substance', it is 'substantial' – it's real, large, and important.

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