Related Clues:

• [I give up]
• Frustrated one's exhalation
• Charlie Brown's refrain
• Sound weary
• Imitate a hot dog
• ___ of relief
• Sound with 23-Across
• Exhale sadly
• Moan
• Exhalation of breath, with relief say
• Audible exhalation of breath
• Breath noisily from exertion
• This would get worn in the plural as one would if one were worn out
• How 14 down will start to leave one breathless
• Sadly, that's one way to draw 27 down