Main entry: real, material, substantial
Definition: having substance or capable of being treated as fact; not imaginary
Usage: the substantial world; a mere dream, neither substantial nor practical; most ponderous and substantial things- Shakespeare
Antonyms: insubstantial, unreal, unsubstantial
Definition: lacking material form or substance; unreal
Main entry: solid, substantial, strong
Definition: of good quality and condition; solidly built
Usage: a solid foundation; several substantial timber buildings
Definition: the absence of sound
Antonyms: unsound
Definition: not sound financially
Antonyms: unsound
Definition: not in good condition; damaged or decayed
Main entry: substantial, substantive
Definition: having a firm basis in reality and being therefore important, meaningful, or considerable
Usage: substantial equivalents
Antonyms: inessential, nonessential
Definition: anything that is not essential
Antonyms: unessential, inessential
Definition: not basic or fundamental
Main entry: significant, substantial
Definition: fairly large
Usage: won by a substantial margin
Antonyms: inconsiderable
Definition: too small or unimportant to merit attention
Main entry: satisfying, solid, square, hearty, substantial
Definition: providing abundant nourishment
Usage: a hearty meal; good solid food; ate a substantial breakfast; four square meals a day
Antonyms: unwholesome
Definition: detrimental to physical or moral well-being