Related Clues:

• In a profound way
• Germany reply without writing profoundly
• With conviction
• Yelped when beaten — with a resonant voice?
• You may see a river run thus
• Work on river, fathoms down?
• Jolly travel on river
• Well beneath the surface
• With great conviction
• On a fundamental level
• Yelped painfully and intensely
• Character husband needs in the end to work at with intensity
• One way to breathe
• Yelped, getting wound up and most indignant
• Letter spelled out work in detail