| 100% | ERS | 3 | Where operators may be standing by: Abbr. |
| 62% | ERS | 3 | Where operators stand by?: Abbr. |
| 55% | CALLCENTERS | 11 | Where "operators are standing by" |
| 50% | ONLINE | 6 | Where one might be represented by an avatar |
| 50% | ORS | 3 | Where hearts may be opened: Abbr. |
| 48% | ORS | 3 | Places where organs may be seen: Abbr. |
| 48% | ETD | 3 | It may be delayed by snow: Abbr. |
| 48% | IDS | 3 | They might be checked by bouncers: Abbr. |
| 46% | CALLNOW | 7 | ''Operators are standing by!'' |
| 46% | ETD | 3 | It may be delayed by a storm: Abbr. |
| 46% | ERS | 3 | Where critical cases are taken by ambulances: Abbr. |
| 45% | IDS | 3 | They might be checked by a nightclub bouncer: Abbr. |
| 45% | APOS | 4 | Where private messages may be sent?: Abbr. |
| 45% | UFO | 3 | What a weather balloon may be imagined to be, by some: Abbr. |
| 44% | ORLY | 4 | Airport where you might be dropped off by the Noctilien |
| 44% | UFOS | 4 | Ships that might be piloted by Martians: Abbr. |
| 44% | FEB | 3 | It may be represented by a 2, on a calendar: Abbr. |
| 44% | ETD | 3 | Something that may be delayed by a storm: Abbr. |
| 44% | EKG | 3 | Test that might be ordered by a cardiologist: Abbr. |
| 43% | ADSPEAK | 7 | "Operators are standing by" and "Call now!," e.g. |
| 42% | UFO | 3 | Mysterious aircraft that might be piloted by aliens: Abbr. |
| 42% | CPR | 3 | Lifesaving procedure that might be performed by an EMT: Abbr. |
| 41% | RULE | 4 | It may be standing |
| 41% | OVATION | 7 | It may be standing |
| 41% | OFFER | 5 | It may be standing |
| 41% | {OV}ATIONS | 10 | They may be standing |
| 41% | ORDERS | 6 | They might be standing |
| 40% | OJS | 3 | Morning drinks that might be made by Tropicana or Minute Maid: Abbr. |
| 40% | ORDERS | 6 | They might be standing or marching |
| 39% | STATUE | 6 | One may be standing at a fountain |