decline
declined
verb
1.
2.
3. To degrade or lower oneself; condescend.
4. To deteriorate gradually; fail.
5. a. To sink, as the setting sun. b. To draw to a gradual close; wane.
3.
noun
4.
5.
[Middle English declinen, from Old French decliner, from Latin dēclīnāre, to turn away, bend downward, change the form of a word : dē-, de- + -clīnāre, to lean, bend.]
declin