Absence
late Middle English: from Old French, from Latin absentia, from absens, absent- (see absent).
wiktionary
From Middle English absence, from Old French absence, ausence, from Latin absentia, from absēns(“absent”), present active participle of absum(“I am away or absent”), from ab(“from, away from”) + sum(“I am”).
etymonline
absence (n.)
"state of not being present," late 14c., from Old French absence "absence" (14c.), from Latin absentia, abstract noun from absentem (nominative absens), present participle of abesse "be away from, be absent," from ab "off, away from" (see ab-) + esse "to be" (from PIE root *es- "to be"). Absence makes the heart grow fonder is a line from the song "Isle of Beauty" by English poet and composer Thomas Haynes Bayly (1797-1839).
