Related Clues:

• Expression of hesitation — one of Pooh's?
• Noise of a cat
• Be in great activity
• Sound from a kitten
• Tiddles' sound
• What cats and some engines do
• Sounds like Tom opens Princeton University recreational room
• Tom's expression of pleasure
• Felix sounds pleased to do this
• Tom's euphoric vibes
• Show pleasure when voting system covers ancient city
• Tom's pleased, by the sound of it
• Sound contented
• Cat's coo
• Show pleasure when involved in rising corruption