degenerate

adjective

• 1having lost the physical, mental, or moral qualities considered normal and desirable; showing evidence of decline:a degenerate form of a higher civilization

• 2 technical lacking some usual or expected property or quality, in particular:
• Mathematics (of a type of equation, curve, etc.) equivalent to a simpler type, especially when a variable or parameter is set to zero.
• Physics (of an energy level) corresponding to more than one quantum state.
• Physics (of matter) at densities so high that gravitational contraction is counteracted, either by the Pauli exclusion principle or by an analogous quantum effect between closely packed neutrons.
• Biology having reverted to a simpler form as a result of losing a complex or adaptive structure present in the ancestral form: degenerate offshoots from the main line of vertebrate progress

noun

• an immoral or corrupt person: get out of my house, you degenerate!

verb

• decline or deteriorate physically, mentally, or morally:the quality of life had degenerated the debate degenerated into a brawl