Definition of "Substantial" :

adjective: of considerable importance, size, or worth

"Won by a substantial margin."

adjective: having substance or capable of being treated as fact; not imaginary

"The substantial world."

adjective: of or relating to the real nature or essential elements of something

"A substantial argument."

adjective: having an abundant supply of money or possessions of value

"A substantial family."

adjective: of good quality and condition; solidly built

"Several substantial timber buildings."

adjective: providing abundant nourishment

"Ate a substantial breakfast."