postmodern

Concise Oxford English Dictionary © 2008 Oxford University Press:
postmodernism/pəʊstˈmɒdənɪzəm/

▶noun a late 20th-century style and concept in the arts and architecture, characterized by a general distrust of theories and ideologies as well as a problematical relationship with the notion of ‘art’.

– derivatives
postmodern adjective,
postmodernist noun & adjective,
postmodernity noun.