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WORDNET DICTIONARY
THESAURUS

RELATED WORDS : absence absence without leave beg leave compassionate leave complex absence french leave leave leave alone leave behind leave no stone unturned leave off leave office leave out leave well enough alone leave word on leave pure absence sabbatical leave shore leave sick leave simple absence subclinical absence take leave terminal leave unauthorized absence

WORDNET DICTIONARY

Noun leave of absence has 1 sense

• leave of absence(n = noun.time) leave - the period of time during which you are absent from work or duty; "a ten day's leave to visit his mother"
is a kind of time off
has particulars: furlough, pass, compassionate leave, sabbatical, sabbatical leave, liberty, shore leave, sick leave, terminal leave

THESAURUS

leave of absence

AWOL, French leave, abscondence, absence, absence without leave, absentation, absenteeism, absenting, cut, day off, default, departure, disappearance, escape, excused absence, fleeing, furlough, holiday, hooky, leave, leaving, liberty, nonappearance, nonattendance, paid holiday, paid vacation, running away, sabbatical, sabbatical leave, sabbatical year, shore leave, sick leave, time off, truancy, truantism, unexcused absence, vacation, weekend

For further exploring for "leave of absence" in Webster Dictionary Online