definition of
substantial

[1] #1 substantial s. [significant] fairly large; "won by a substantial margin". wn

[2] #2 substantial s. [substantive] having a firm basis in reality and being therefore important, meaningful, or considerable; "substantial equivalents". wn

[3] #3 substantial a. [real, material] 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. wn

[4] #4 substantial s. [hearty, satisfying, solid, square] providing abundant nourishment; "a hearty meal"; "good solid food"; "ate a substantial breakfast"; "four square meals a day". wn

[5] #5 substantial s. [solid, strong] of good quality and condition; solidly built; "a solid foundation"; "several substantial timber buildings". wn