v.
1 tr. cause grief or great distress to.
2 intr. suffer grief, esp. at another's death.
Derivatives:
griever n.
Etymology: ME f. OF grever ult. f. L gravare f. gravis heavy
2.
n. Sc. a farm-bailiff; an overseer.
Etymology: OE groe.fa: cf. REEVE(1)
Useful english dictionary. 2012.