lower

verb: to move something down to a less elevated position
- Please lower the flag at sunset.
verb: to reduce in amount, degree, or intensity
- The store will lower its prices for the sale.
verb: to behave in a way that is less dignified or moral
- He refused to lower himself by responding to the insults.
adjective: positioned below one or more similar things, or of the bottom part of something
- Her lower lip trembled.
adjective: less advanced in organization or development
- Lower animals like insects have simpler nervous systems.