From Longman Dictionary of Contemporary Englishmidlife crisismid‧life cri‧sis (also mid-life crisis) /ˌmɪdlaɪf ˈkraɪsɪs/ noun [countable] MPa period of worry and lack of confidence that some people experience when they are about 40 or 50 years old and begin to feel that they are getting old
Examples from the Corpus
midlife crisis• I wonder if I could secretly be having a midlife crisis?• Brook's latest film about a writer who's suffering a midlife crisis received poor reviews.• I do believe you are either having a nervous break-down or you are going through a midlife crisis.• The so-called midlife crisis can occur at any age, whenever we search for meaning, intimacy, and purpose.• Merrick offered a revealing critique of Stephen Sondheim's high-concept Follies, a musical about ageing showgirls in midlife crisis. 