A person who is feeling grief (as grieving over someone who has died).

synonyms: griever, lamenter, sorrower.

Roget 839: lament, lamentation; wail, complaint, plaint, murmur, mutter, grumble, groan, moan, whine, whimper, sob, sigh, suspiration, heaving, deep sigh.    cry etc. (vociferation) 411; scream, howl; outcry, wail of woe, ululation; frown, scowl.    tear; weeping etc. v.; flood of tears, fit of crying, lacrimation, lachrymation^†, melting mood, weeping and gnashing of teeth.    plaintiveness etc. adj.; languishment^†; condolence etc. 915.    mourning, weeds, willow, cypress, crape, deep mourning; sackcloth and ashes; lachrymatory^†; knell etc. 363; deep death song, dirge, coronach^†, nenia^†, requiem, elegy, epicedium^†; threne^†; monody, threnody; jeremiad, jeremiade^†; ullalulla^†.    mourner; grumbler etc. (discontent) 832; Noobe; Heraclitus.    ... show more

Dutch: Weeklager
Polish: żałobnik