Retire/rɪˈtaɪər/ Definition 1 of 4Pro Tip 1/3Career Conclusion Used to signify ending a professional career, commonly due to age. After 35 years, the teacher decided to retire. Pro Tip 2/3Not Permanent 'Retire' doesn't mean you can't work again. Some come out of retirement. My aunt retired from teaching but tutors occasionally. Pro Tip 3/3Planned Future People often plan when they'll retire, considering personal and financial factors. He's saving money so he can retire at 55.