operational

2. similar to: serviceable - ready for service or able to give long service
   same as: functional, operable, usable, useable
3. referred to in: armed forces, armed services, military, military machine, war machine - the military forces of a nation
   similar to:

   • active, combat-ready, fighting - engaged in or ready for military or naval operations
   • effective - ready for service
4. similar to: operative - being in force or having or exerting force
   same as: in operation, operating

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