| Answer | Crossword Clue |
|---|---|
| TOUGHCOOKIE | Not the easiest person to deal with |
| NARC | Bad person to do a deal with |
| DEVIL | Someone not to deal with |
| BLACKBELT | Person not to mess with |
| MRINBETWEEN | Person not to be messed with, in song |
| SIEVE | Not a good person to entrust with secrets, informally |
