Neglect
early 16th century: from Latin neglect- ‘disregarded’, from the verb neglegere, from neg- ‘not’ + legere ‘choose, pick up’.
wiktionary
Borrowed from Latin neglēctus, perfect passive participle of neglegō(“make light of, disregard, not to pick up”), a variant of neclegō, itself from nec(“not”) + legō(“pick up, select”). Recorded since 1529, as noun since 1588.
etymonline
neglect (v.)
1520s, "omit to do or perform;" 1530s, "treat carelessly or heedlessly, treat with disrespect or without proper attention or care;" from Latin neglectus, past participle of neglegere "to make light of, disregard, be indifferent to, not heed, not trouble oneself about," literally "not to pick up," variant of neclegere, from Old Latin nec "not" (from PIE root *ne- "not") + legere "pick up, select," from PIE root *leg- (1) "to collect, gather." Related: Neglected; neglecting.
neglect (n.)
1580s, "act of treating with slight attention;" 1590s, "omission, oversight, want of attention to what ought to be done;" from neglect (v.) or from Latin neglectus "a neglecting," noun use of past participle of neglegere.