| 100% | RSVP | 4 | "Let us know if you're coming": Abbr. |
| 90% | RSVP | 4 | "Please let us know if you're coming" letters |
| 90% | RSVP | 4 | "Please let us know if you're coming" abbreviation |
| 84% | RSVP | 4 | "Let us know if you're coming" initials |
| 84% | RSVP | 4 | "Let us know if you're coming" letters |
| 71% | ABLE | 4 | "Let us know if you're ___ to attend" |
| 71% | RSVP | 4 | “Let us know if you’re attending” letters |
| 67% | RSVP | 4 | "Let me know if you're coming" |
| 67% | RSVP | 4 | "Let me know if you're coming" letters |
| 67% | RSVP | 4 | "Let me know if you're coming" initials |
| 63% | ABLE | 4 | "Let us know if you'll be ___ to attend" |
| 55% | RSVPED | 6 | Let someone know if you can go |
| 53% | RSVP | 4 | "Kindly let us know," on invites: Abbr. |
| 49% | TBA | 3 | "When we know, you'll know": Abbr. |
| 47% | FYI | 3 | Memo starter (Just letting you know): Abbr. |
| 46% | RSVP | 4 | "Tell me if you're coming" letters |
| 46% | RSVP | 4 | "Tell us if you can attend": Abbr. |
| 45% | SML | 3 | If you're a size 90/95 in Korea, then you're likely this size in the US (abbr.) |
| 44% | YOURHANDS | 9 | Clap them if you're happy and you know it |
| 43% | OGLE | 4 | Let someone know you're interested |
| 43% | ESP | 3 | Purported ability that could let you know what someone else is thinking: Abbr. |
| 42% | FYI | 3 | "Just letting you know" in chatspeak: Abbr. |
| 42% | TBA | 3 | "We'll let you know later" |
| 42% | SPIN | 4 | "Did you know, we can ___ 1a to tell if it's raw or boiled?" |
| 42% | NSFW | 4 | "Don't look at this if you're in the office!": Abbr. |
| 42% | ESP | 3 | "I know what you're thinking" ability: Abbr. |
| 42% | TBA | 3 | "We'll let you know," on skeds |
| 42% | FYI | 3 | "Letting you know," in text speak: Abbr. |
| 41% | RSVP | 4 | "Kindly let us know" letters on invites |
| 41% | BUILDIT | 7 | If you __, they will come |