deplore (v.)

1550s, "to give up as hopeless, despair of," a sense now obsolete, from French déplorer (13c.), from Latin deplorare "deplore, bewail, lament, give up for lost," from de- "entirely" (see de-) + plorare "weep, cry out," which is of unknown origin. Meaning "to regret deeply" is from 1560s. Related: Deplored; deploring.