showing decadence

corrupt, self-indulgent

(the result, amount of) decreasing

diminishing, lessening

sad; depressed; ill; from a high(er) level to a low(er) one

below; physically lower

in a downward direction

descending

to produce, take on, a colour, usually by dropping (something) in a liquid

failing, expiring

weak, without energy; incapable (because too subtle, sensitive, refined)

spoiled, exhausted

(of a person) old

in old age

a weakness or fault (of character); in the absence of

not well, weak

the part of a story or drama (after the climax) when the leading character suffers (before the final catastrophe or resolution)

dropping

about to come to an end

dying

likely to cause worse conditions

reverting

likely to throw up food from the stomach; ill; not well

not healthy, not feeling well