DictionarysubstantialSolid construction
adjective

substantial

sub-STAN-shul/səbˈstænʃl/

Having firm material substance.

The substantial wooden beam firmly supports the heavy stone slab.

A thick sturdy wooden beam firmly supports a heavy stone slab, visibly substantial compared with one thin loose offcut nearby; realistic weight-bearing structure, no human risk.
Etymology

Having substance suggests real existence or solid material; pertaining to a thing’s essence suggests something central rather than incidental. These connections illuminate substantial as sizeable, solid, or important enough to matter.

In context

Seamwork8:29
The fabric is substantial enough that you really need to respect its weight
12 Types of Wool Fabric: A Complete Guide for Sewists

More examples

  • They replace the flimsy fence with a substantial stone wall.
  • This chair feels substantial enough to last for years.
  • The shed rests on a substantial concrete foundation.

Forms

substantial · more substantial · most substantial

Similar words

solid
Emphasizes firmness rather than weakness or hollowness.
sturdy
Emphasizes the ability to withstand force or wear.