to grieve over; to mourn; to lament
人々は恩師の死を悼んだ。
People mourned the death of their beloved teacher.
同僚たちは、急逝した友を悼んで集う。
Colleagues gather to mourn a friend who passed away suddenly.
亡くなった友を悼む手紙を書く習慣。
It is a custom to write letters mourning a deceased friend.