1. Considerable in importance, value, degree, amount, or extent: made a substantial improvement; won by a substantial margin.
2. Solidly built; strong: substantial houses.
3. Ample; sustaining: a substantial breakfast.
4. Possessing wealth or property; well-to-do.
a. Of, relating to, or having substance; material.
b. True or real; not imaginary.
6. Achieving the goal of justice itself, not merely the procedure or form that is a means to justice: principles of substantial justice.
[Middle English substancial, from Old French substantiel, from Latin substantiālis, from substantia, substance; see SUBSTANCE.]
sub·stan′ti·ali·ty (-shē-ălĭ-tē), sub·stantial·ness (-shəl-nĭs) n.
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2019 by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Indo-European & Semitic Roots Appendices
Thousands of entries in the dictionary include etymologies that trace their origins back to reconstructed proto-languages. You can obtain more information about these forms in our online appendices:
The Indo-European appendix covers nearly half of the Indo-European roots that have left their mark on English words. A more complete treatment of Indo-European roots and the English words derived from them is available in our Dictionary of Indo-European Roots.