the process of corroding or being corroded

disintegration

the fall to a lower standard (in morals, art, literature etc)

perversion; deterioration of morality

to be, begin to be, decaying

breaking down, collapse

the process of changing the endings of nouns, pronouns, and adjectives according to their use in a sentence

deterioration

a period of gradual and continued loss of importance, strength

lessening

the giving, delegating or the centralizing (of power or authority)

backsliding

a heavy fall (of rain etc)

disgrace, ruin

the flowing out of the tide; a low mood or state

regression; decline

the decay of a part of the body because the supply of blood to it has been stopped

decay

a destroyed state; a state of financial collapse; a building that has been destroyed

situation of devastation