Related Clues:

• Open wide, in a way
• Real bore
• Display of disinterest
• Show boredom
• Exhibit ennui
• Sign of fatigue
• 'When is this thing over?'
• Open wide?
• Impatient gesture
• Sleepiness sign
• One may be suppressed at a meeting
• Hint to a boring speaker
• Act that's 'contagious'
• It's contagious
• Betray sleepiness