| Operator of the largest brewery facility in the world | 53 |
| Operator of MouthHealthy.org | 28 |
| Operator of drones | 18 |
| Operator of a metal plant | 25 |
| Operator | 8 |
| Operatives: Abbr. | 17 |
| Operatives' org. | 20 |
| Operatives | 10 |
| Operative: Abbr. | 16 |
| Operative, for short | 20 |
| Operative, as a rule | 20 |
| Operative's org. | 20 |
| Operative's employer | 24 |
| Operative | 9 |
| Operations, for short | 21 |
| Operations were once commonly performed in this | 47 |
| Operations mgrs. | 16 |
| Operations ctrs. | 16 |
| Operations center | 17 |
| Operations are performed in it | 30 |
| Operational lines? | 18 |
| Operational headquarters | 24 |
| Operational division | 20 |
| Operational details, informally | 31 |
| Operational | 11 |
| Operation-launching times | 25 |
| Operation, e.g. | 15 |
| Operation's start | 21 |
| Operation ____: naval Antarctica project | 40 |
| Operation ___ Freedom (2003) | 28 |
| Operation ___ Freedom | 21 |
| Operation __ Freedom (2003-2011 conflict) | 41 |
| Operation VIP | 13 |
| Operation Uphold Democracy site | 31 |
| Operation Trinity locale | 24 |
| Operation Trinity event | 23 |
| Operation Torch setting: Abbr. | 30 |
| Operation times | 15 |
| Operation time | 14 |
| Operation that often precedes an entrapment claim | 49 |
| Operation specialist | 20 |
| Operation souvenir | 18 |
| Operation Solomon airline | 25 |
| Operation since August 1990 | 27 |
| Operation reminders | 19 |
| Operation reminder | 18 |
| Operation Redwing event, 1956 | 29 |
| Operation Red Dawn city | 23 |
| Operation Pipe Dreams org. | 26 |
| Operation Phone Home gp. | 24 |
| Operation Overlord, e.g. | 24 |
| Operation Overlord's time | 29 |
| Operation Overlord vessel, for short | 36 |
| Operation Overlord time | 23 |
| Operation Overlord site | 23 |
| Operation Overlord overseer | 27 |
| Operation Overlord monogram | 27 |
| Operation Overlord launch | 25 |
| Operation Overlord high point | 29 |
| Operation Overlord beach | 24 |
| Operation Neptune Spear org. | 28 |
| Operation memento | 17 |
| Operation Mail Call grp. | 24 |
| Operation Mail Call gp. | 23 |
| Operation locations, for short | 30 |
| Operation Just Cause's setting | 34 |
| Operation Just Cause target | 27 |
| Operation in a medical thriller, for short | 42 |
| Operation in 1998 news | 22 |
| Operation in "The Sting" | 34 |
| Operation IceBridge grp. | 24 |
| Operation Hastings org. | 23 |
| Operation for Bugs? | 19 |
| Operation for a new liver or kidney | 35 |
| Operation Exodus participant | 28 |
| Operation Enduring Care sponsor | 31 |
| Operation Enduring Care gp. | 27 |
| Operation Dragoon's loc.: Abbr. | 35 |
| Operation Desert Storm's beginning | 38 |
| Operation Desert Storm target | 29 |
| Operation Desert Storm setting | 30 |
| Operation Desert Storm | 22 |
| Operation Desert Fox, e.g. | 26 |
| Operation Deliberate Force nation | 33 |
| Operation Cyclone org. | 22 |
| Operation Crossroads event, 1946 | 32 |
| Operation creation | 18 |
| Operation centers? | 18 |
| Operation by an obstetrician | 28 |
| Operation attire | 16 |
| Operation at the Alamo | 22 |
| Operation Allied Force gp. | 26 |
| Operation aids | 14 |
| Operation aftermath | 19 |
| Operation "souvenir" | 30 |
| Operation | 9 |
| Operating-room process | 22 |
| Operating, as radar | 19 |
| Operating without _____ | 23 |
| Operating without ___ (taking risks) | 36 |