| Answer | Crossword Clue |
|---|---|
| REDFLAG | Sign of trouble |
| SIREN | Sign of trouble |
| SOS | Sign of trouble |
| SIGNALFLARE | Sign of trouble |
| BADOMEN | Sign of trouble |
| OMEN | Sign of trouble |
| SMOKE | Sign of engine trouble |
| PING | Sign of engine trouble |
| OMEN | Sign of impending trouble |
| OMEN | Sign of impending trouble, maybe |
| PING | Sign of engine trouble, perhaps |
| OMEN | Sign of impending trouble, perhaps |
| OMEN | Sign of impending trouble, to some |
| HORNETSNEST | Trouble sign |
| KETTLEOFFISH | Trouble sign |
| PANDORASBOX | Trouble sign |
| STICKYWICKET | Trouble sign |
