Related Clues:

• Set upright
• Got up from the recliner
• Got to one's feet
• Didn't move
• Responded to reveille
• Lost one's lap
• Didn't lie?
• Remained upright
• Abdicated a seat
• Got up from one's chair
• Waited, as in line
• Awaited the anthem
• Behaved respectfully, perhaps
• Rose from a chair
• Abided