carpe diem UK /ˌkɑː.piː ˈdaɪ.ɛm/US /ˌkɑɹ.pi ˈdaɪ.ɛm/ saying1 •Enjoy the present, make the most of today, (common mistranslation) seize the day.It is the carpe diem religion; but the carpe diem religion is not the religion of happy people, but of very unhappy people. — 1905