Visualize
When one forms a mental image of something
Decay
When something starts to decompose or rot
Despair
Loss of hope
Neglected
Something that is not given any thought or care to
Evolve
When something develops gradually
Exhilarate
A state of extreme happiness and excitement
Pendulum
Used to refer to the tendency of a situation to go from one extreme to another
Plateau
When something reaches a state of little or no change despite on-going activity