Possible Clues:

• Some still-life artists with cold feet
• Aviators reversed bearing in alarm
• '___ makes strangers of people who would be friends': Shirley MacLaine
• Dread, alarm
• Trembling companion
• In the end, for listening to loud music out of trepidation
• Concern for fellow listener
• Anxiety caused by danger
• Cause of some shivers
• Sweat