Related Clues:

• Out of one's gourd
• Divider's word
• ''And lead us not ---...''
• Sondheim's ''--- the Woods''
• See 40-Across
• Enthusiastic about
• Excessively enthusiastic
• A fan of
• Excited about
• A student of
• Krakauer's ''--- Thin Air''
• Word with "each life" or "thin air"
• Studying closely
• Bit of baby talk
• Word of division