tr.v. de·pressed, de·press·ing, de·press·es
1. To cause to be sad or dejected.
a. To cause to drop or sink; lower: The drought depressed the water level in the reservoirs.
b. To press down: Depress the space bar on a typewriter.
3. To lessen the activity or force of; weaken: feared that rising inflation would further depress the economy.
4. To lower prices in (a financial market).
[Middle English depressen, to push down, from Old French depresser, from Latin dēprimere, dēpress- : dē-, de- + premere, to press; see per-4 in the Appendix of Indo-European roots.]
The American Heritage® Dictionary of the English Language, Fifth Edition copyright ©2018 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.