substantial

fairly large; "won by a substantial margin"

having a firm basis in reality and being therefore important, meaningful, or considerable; "substantial equivalents"

having substance or capable of being treated as fact; not imaginary; "the substantial world"; "a mere dream, neither substantial nor practical"; "most ponderous and substantial things"- Shakespeare

providing abundant nourishment; "a hearty meal"; "good solid food"; "ate a substantial breakfast"; "four square meals a day"

of good quality and condition; solidly built; "a solid foundation"; "several substantial timber buildings"