Related Clues:

• Snoopy
• Inclined to listen in
• Prone to prying
• A fan of
• Obviously interested
• Excited about
• A student of
• Meddlesome
• Krakauer's ''--- Thin Air''
• Word with "each life" or "thin air"
• Too inquisitive
• Studying closely
• Word of division
• Looking for dirt, perhaps
• ''--- each life some rain ....''