this corrupt world; the degenerate world
A set phrase expressing disillusionment with the moral decay or impurity of contemporary society. Often used in literary or rhetorical contexts.
Even in this corrupt world, we must not give up hope.
He wrote a poem lamenting the degenerate world.
A compound of 濁った (past attributive of 濁る 'to become muddy/impure') and 世の中 ('society, the world'). The phrase metaphorically describes a world tainted by moral or spiritual impurity.