| Signal for silence | 18 |
| Signal for the USCG | 19 |
| Signal from a man in a trenchcoat | 33 |
| Signal from a note passer | 25 |
| Signal from a sinking ship | 26 |
| Signal from someone in trouble | 30 |
| Signal from the third base coach, maybe | 39 |
| Signal from the Titanic: April, 1912 | 36 |
| Signal giver | 12 |
| Signal givers | 13 |
| Signal hello or goodbye | 23 |
| Signal in a courtroom | 21 |
| Signal in many homes, nowadays | 30 |
| Signal interference | 19 |
| Signal light | 12 |
| Signal lights | 13 |
| Signal meaning ''help'' | 39 |
| Signal of a kind | 16 |
| Signal of a sort | 16 |
| Signal of approval | 18 |
| Signal of comprehension | 23 |
| Signal of imminent attack | 25 |
| Signal on a screen | 18 |
| Signal on stage | 15 |
| Signal on the hour | 18 |
| Signal one's agreement | 26 |
| Signal or indicate | 18 |
| Signal or Marine | 16 |
| Signal or trooper preceder | 26 |
| Signal period of time | 21 |
| Signal receiver | 15 |
| Signal receivers | 16 |
| Signal sayonara | 15 |
| Signal sender | 13 |
| Signal shade | 12 |
| Signal showing a storm's position | 37 |
| Signal silently | 15 |
| Signal since 1912 | 17 |
| Signal strengthener | 19 |
| Signal subtly | 13 |
| Signal surrender | 16 |
| Signal that danger has passed | 29 |
| Signal that had only existed for a few years when the RMS Titanic used it | 73 |
| Signal that one's eggs are done? | 36 |
| Signal that one's ready for dinner? | 39 |
| Signal that replaced "CQD" | 36 |
| Signal that starts a scramble | 29 |
| Signal that the game's over by the Irish ref? (Prince / Living Colour) | 74 |
| Signal the auctioneer | 21 |
| Signal the doctor | 17 |
| Signal the genie | 16 |
| Signal to a broker | 18 |
| Signal to a road hog | 20 |
| Signal to a runner | 18 |
| Signal to act | 13 |
| Signal to an actor | 18 |
| Signal to an on-call doctor | 27 |
| Signal to begin speaking | 24 |
| Signal to begin speaking, perhaps | 33 |
| Signal to clear the road | 24 |
| Signal to come | 14 |
| Signal to enter | 15 |
| Signal to from the pier, perhaps | 32 |
| Signal to go | 12 |
| Signal to leave | 15 |
| Signal to leave a message | 25 |
| Signal to leave, perhaps | 24 |
| Signal to pause | 15 |
| Signal to proceed | 17 |
| Signal to pull over | 19 |
| Signal to slow | 14 |
| Signal to start | 15 |
| Signal to start partying? | 25 |
| Signal to start speaking, perhaps | 33 |
| Signal to start talking | 23 |
| Signal to stop | 14 |
| Signal to stop playing | 22 |
| Signal to stop, with "down" | 37 |
| Signal to the auctioneer | 24 |
| Signal to try to score | 22 |
| Signal tones | 12 |
| Signal used in the Navy or Army | 31 |
| Signal via beeper | 17 |
| Signal when sinking | 19 |
| Signal with the hands | 21 |
| Signal withdrawal | 17 |
| Signal word for the last letter | 31 |
| Signal, as a cab | 16 |
| Signal, as a taxi | 17 |
| Signal, as with a nod | 21 |
| Signal, in a way | 16 |
| Signal-carrying, in a way | 25 |
| Signal-code word | 16 |
| Signal-detecting device | 23 |
| Signaled | 8 |
| Signaled boatswain style | 25 |
| Signaled 'hello' | 24 |
| Signaled "hi" or "bye" | 42 |
| Signaled "thumbs up" | 30 |
| Signaled a card holding | 23 |