#1 depress v. [deject, cast down, get down, dismay, dispirit, demoralize, demoralise] lower someone's spirits; make downhearted; "These news depressed her"; "The bad state of her child's health demoralizes her". wn
#2 depress v. lower (prices or markets); "The glut of oil depressed gas prices". wn
#3 depress v. [lower] cause to drop or sink; "The lack of rain had depressed the water level in the reservoir". wn
#4 depress v. [press down] press down; "Depress the space key". wn
#5 depress v. lessen the activity or force of; "The rising inflation depressed the economy". wn
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