mid-14c., "ample, sizeable," from Old French substantiel (13c.) and directly from Latin substantialis "having substance or reality, material," in Late Latin "pertaining to the substance or essence," from substantia "being, essence, material" (see substance). Meaning "existing, having real existence" is from late 14c. Meaning "involving an essential part or point" is early 15c. Related: Substantially.
won by a substantial margin
a substantial argument
the substantial world
a mere dream, neither substantial nor practical
The wind was violent and felt substantial enough to lean against
ate a substantial breakfast
several substantial timber buildings
a substantial family
subsoil
subsonic
subspecies
substance
substandard
substantial
substantiate
substantiation
substantive
substation
substitute
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