| Answer | Crossword Clue |
|---|---|
| REF | He'll let you know if you're out of bounds |
| RSVP | "Let us know if you're coming" |
| RSVP | "Let us know if you're coming" letters |
| RSVP | "Let me know if you're coming" letters |
| RSVP | Let the host know if you're coming |
| PAGERS | They let you know you're wanted |
| ARCADEGAMES | Machines that let you know when you're dead |
