(adj): predicate) -- (not present; having left
(adj): impossible to find
(adj): absent without permission
(adj): nonexistent
(adj): vs. existent) -- (not having existence or being or actuality
(adj): lost in thought; showing preoccupation
(adj): vs. attentive) -- (showing a lack of attention or care
(v): go away or leave
(v): get lost, as without warning or explanation
