of good quality and condition
solidly built "a solid foundation" "several substantial timber buildings"
providing abundant nourishment "a hearty meal" "good solid food" "ate a substantial breakfast" "four square meals a day"
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
having a firm basis in reality and being therefore important, meaningful, or considerable "substantial equivalents"