Eclipse
Middle English: from Old French e(s)clipse (noun), eclipser (verb), via Latin from Greek ekleipsis, from ekleipein ‘fail to appear, be eclipsed’, from ek ‘out’ + leipein ‘to leave’.
wiktionary
From Old French eclipse, from Latin eclīpsis, from Ancient Greek ἔκλειψις(ékleipsis, “eclipse”), from ἐκλείπω(ekleípō, “I abandon, go missing, vanish”), from ἐκ(ek, “out”) and λείπω(leípō, “I leave behind”).
etymonline
eclipse (n.)
c. 1300, from Old French eclipse "eclipse, darkness" (12c.), from Latin eclipsis, from Greek ekleipsis "an eclipse; an abandonment," literally "a failing, forsaking," from ekleipein "to forsake a usual place, fail to appear, be eclipsed," from ek "out" (see ex-) + leipein "to leave" (from PIE root *leikw- "to leave").
eclipse (v.)
late 13c., "to cause an eclipse of," from Old French eclipser, from eclipse (see eclipse (n.)).Figurative use from 1570s. Also in Middle English in an intransitive sense "to suffer an eclipse," now obsolete. Related: Eclipsed; eclipsing.
