| Razz |
| Sound |
| Siffle |
| Catcall |
| Boo" kin |
| Boo mate |
| Sibilate |
| Leak sound |
| Cat sound? |
| Fuse sound |
| 'Boo- --!' |
| Vent sound |
| Flat sound |
| Cobra sound |
| Snake "talk |
| Snake speak |
| Snaky noise |
| Steam sound |
| Snake sound |
| Boo follower |
| Feline sound |
| Booing sound |
| Modified boo |
| Serpent song |
| Steamy sound |
| Theater jeer |
| Boo's cousin |
| Boo relative |
| Sibilant boo |
| Kettle sound |
| A way to talk |
| Cobra comment |
| Tom's comment |
| Catty warning |
| Leak giveaway |
| Serpent sound |
| Snake warning |
| Snake's noise |
| Boo's partner |
| Cat's warning |
| Snake's sound |
| Derisive sound |
| Bad reception? |
| Warning sound. |
| Leak indicator |
| Sibilant sound |
| Audience sound |
| Boo's relative |
| Boo's sidekick |
| Infamous Alger |
| Ophidian sound |
| Spit, as a cat |
| Asp's greeting |
| Moccasin sound |
| Sound of steam |
| Sign of a leak |
| Unwarm welcome |
| Radiator noise |
| Puncture sound |
| Radiator sound |
| Let off steam? |
| Poor reception? |
| Greet uncivilly |
| Audience insult |
| Emulate a snake |
| Audible reproof |
| Cobra's comment |
| Greet a villain |
| Mad cat's sound |
| Rattler's noise |
| Blow off steam? |
| Serpent's sound |
| Kettle emission |
| Snake's warning |
| Show disapproval |
| Show displeasure |
| Heckle, in a way |
| Copperhead sound |
| Cobra's greeting |
| Derisive welcome |
| Feline's warning |
| Leakage evidence |
| Ophidian's sound |
| React like a cat |
| Scared cat sound |
| Sound of warning |
| Sound of a snake |
| Radiator's sound |
| Serpentine sound |
| Greet the villain |
| Sound of contempt |
| Sign of hostility |
| Relative of a boo |
| Boo!" alternative |
| Boo!" accompanier |
| Accused spy Alger |
| Cat's disapproval |
| Defendant of 1949 |
| Lo-fidelity sound |
| Moccasin emission |
| Scary snake sound |
| Vocal thumbs-down |
| Angry crowd sound |
| Boo accompaniment |
| Make snake sounds |
| Villain's welcome |
| Angry cat's sound |
| Serpent's warning |
| Coal-dousing sound |
| Evince displeasure |
| Fire-dousing sound |
| Escaping air sound |
| King cobra warning |
| Let off some steam |
| Unwelcome greeting |
| Viper's "Back off! |
| Sign of an escape? |
| Sound from a snake |
| Sound like a snake |
| Villain's greeting |
| Disapproving sound |
| Express disapproval |
| Express displeasure |
| Haunted house noise |
| I'm mad," cat-style |
| Cat-meets-dog sound |
| Cat's ''Back off!'' |
| Rattlesnake's sound |
| Serpentine greeting |
| Snake's angry sound |
| Unwelcome reception |
| Warning from Fluffy |
| Angry cat's warning |
| Villain's reception |
| Sound of disapproval |
| Serenade the villain |
| React to the villain |
| Sound from a serpent |
| Not a good reception |
| Sound from a mad cat |
| Sound of displeasure |
| Claw-raised utterance |
| Cottonmouth's warning |
| Greet a stage villain |
| Greeting to a villain |
| Greet with fangs, say |
| Snake's warning sound |
| Vocalize like a viper |
| Pressure cooker sound |
| Sound from a radiator |
| Sound of escaping air |
| Let off a little steam |
| Unhappy fan's reaction |
| Razz from the audience |
| Snake's sibilant sound |
| Greeting for a villain |
| Venting sound (hint #6) |
| Angry audience reaction |
| Sound of escaping steam |
| Sound from an angry cat |
| Greeting for the villain |
| Hardly a sign of support |
| Sound of dissatisfaction |
| What frightened geese do |
| Ssssss" sound from a snake |
| Reaction from an angry cat |
| Sharp sound of disapproval |
| Sound of crowd disapproval |
| Critical comment, of a sort |
| Disapproving audience sound |
| Sound of an angry spectator |
| Busted tirade sound, perhaps |
| Subject of the book "Perjury |
| Expression of dissatisfaction |
| Sound from a leaking radiator |
| Sound from an arch-backed cat |
| Sound from a slithery reptile |
| Wordless sound of disapproval |
| Response from a peeved Persian |
| Announce the villain's arrival |
| Angry sound from a cat or a cobra |
| Sound of contemptuous disapproval |
| Get away, stranger!" (from a cat) |
| Acknowledge the villain's entrance |
| Boo and ___ (respond to a villain) |
| Noise at a bad stand-up performance |
| Sound heard when the villain enters |
| Sound from a cat with an arched back |
| Snake sound or expression of contempt |
| Sound from an cat with an arched back |
| What letting off steam might result in |
| Sound issued with an arched back, perhaps |
| Vocally respond to the villain's entrance |
| Sound neither an actor nor a hiker wants to hear |
| [You smell like some other cat and I don't like you] |
| [I can't believe you just stepped on my tail. Now back the fuck away.] |