ABSENT

v. stay away, withdraw oneself

adj. not present; preoccupied, lost in thought

Absenteeism is a habitual pattern of from a duty or obligation.
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Verb
1. go away or leave; "He absented himself"
(synonym) remove
(hypernym) disappear, vanish, go away
(derivation) absentee
Adjective
1. not in a specified place physically or mentally
(antonym) present
(similar) away(p), gone(p), departed(a)
(attribute) presence
2. lost in thought; showing preoccupation; "an absent stare"; "an absentminded professer"; "the scatty glancing quality of a hyperactive but unfocused intelligence"
(synonym) absentminded, abstracted, scatty
(similar) inattentive

adj. absent, off, missing; truant, vacant

n. absentee; A.W.O.L., absent without leave

adj. absent, not present, preoccupied, lost in thought