Read the dictionary definition of depress. All definitions for this word.
1. lessen the activity or force of
1. The rising inflation depressed the economy
2. press down
1. Depress the space key
3. cause to drop or sink
1. The lack of rain had depressed the water level in the reservoir
4. lower someone's spirits; make downhearted
1. These news depressed her
2. The bad state of her child's health demoralizes her
5. lower (prices or markets)
1. The glut of oil depressed gas prices
See also:
Merriam-Webster definition of depress