renounce the world
• completely withdraw from society in order to lead a more spiritually fulfilling life.
• "she renounced the world and went to work in a leper colony"
Similar:
become a recluse,
become a hermit,
turn one's back on society,
retreat,
withdraw,
cloister oneself,
hide oneself away,
shut oneself off/away,
cut oneself off,
