Related Clues:

• Soft sound
• Lunch order
• See 4-Down
• Diner order
• Whisper sweet nothings
• Defrost
• Dove's cry
• Sandwich that's been heated
• Speak of love
• Put salt on, maybe
• Change states, in a way
• Deliquesce
• Go to a different state?
• Liquate
• Soften