1. (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality

• devolution

2. (noun) the state of being degenerate in mental or moral qualities

• decadence
• decadency
• degeneracy

3. (noun) passing from a more complex to a simpler biological form

• retrogression

1. (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality

• physical process
• process

2. (noun) the state of being degenerate in mental or moral qualities

• abasement
• abjection
• degradation

3. (noun) passing from a more complex to a simpler biological form

• shift
• transformation
• transmutation

1. (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality

• attack
• macular degeneration
• obsolescence

2. (noun) passing from a more complex to a simpler biological form

• abiotrophy
• cataplasia

1. (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality

• degenerate
• deteriorate
• devolve
• drop

2. (noun) the state of being degenerate in mental or moral qualities

• decadent
• decadent
• effete
• effete
• degenerate
• deteriorate
• devolve
• drop

1. (noun) the process of declining from a higher to a lower level of effective power or vitality or essential quality

• development
• evolution