awol
1. [ adjective ] (military) having deserted your post or station without leave
Related terms: military disloyal
2. [ adjective ] (military) absent without permission
Synonyms: truant
Examples:

"truant schoolboys" "the soldier was AWOL for almost a week"

Related terms: absent
3. [ noun ] one who is away or absent without leave
Related terms: absentee
Similar spelling:   awl
  awhile
  awheel