Possible Clues:

• Not loose
• Gone after, by the sound of it, pure and simple
• Expedition goes on cold sober
• Untarnished
• Plain about speed
• Sounds as if one is pursued, pure and simple (6)
• Pursued, say, like Jane Eyre?
• Soundly pursued, pure and simple
• Pure and decent
• The boy begins to sound as if he's pursued, pure and simple