Substantial
Considerable
Synonyms: Considerable, material, solid, meaningful, important, major, valuable, worthwhile, ample, goodly, tidy, real, weighty, sizeable, significant, notable, marked, useful, large, appreciable, and decent.
Sturdy
Synonyms: Sturdy, stout, well built, durable, hard-wearing, impervious, solid, strong, well constructed, long-lasting, and imperishable.
Successful
Synonyms: Successful, booming, profit-making, prosperous, affluent, well-to-do, large, rolling in it, stinking rich, buoyant, doing well, profitable, wealthy, moneyed, rich, in the money, loaded, and quids in.
Real
Example Sentences
He made a substantial financial investment.
They received substantial support from community.
There was substantial evidence for conviction.
The project requires substantial time commitment.