Anything having substance; an essential part.
Having a substance; actually existing.
substantial life
Not imaginary; real; actual; true; veritable.
Corporeal; material; firm.
Having good substance; strong; stout; solid; firm.
a substantial fence or wall
Possessed of goods or an estate; moderately wealthy.
a substantial freeholder
Large in size, quantity, or value; ample; significant.
A substantial number of people went to the event.
Most important; essential.
Satisfying; having sufficient substance to be nourishing or filling.
I don't just want a snack; I need something substantial.