bemourn

From Middle English bemornen, from Old English bemurnan (“to mourn, bewail, deplore, be sorry for, care for, take heed for”), equivalent to be- (“over, about”) +‎ mourn. Cognate with Old Saxon bimornian (“to bemourn”).

bemourn (third-person singular simple present bemourns, present participle bemourning, simple past and past participle bemourned)

1. (transitive, rare) To weep or mourn over.
   • 1974, Douglas L. Oliver, Ancient Tahitian Society:

     From the neighbouring settlements and valleys an immense concourse of people collected to bemourn the death of the arii, the Chiefly ladies bleeding themselves more as a matter of form than from grief or real sentiment, […]