Related Clues:

• [I give up]
• Frustrated one's exhalation
• ___ and groan
• Trivial complaint
• Charlie Brown's refrain
• Sound weary
• ___ of relief
• Make haunted house noises
• Sound with 23-Across
• Low sound of pain
• Exhale sadly
• Moan
• Exhalation of breath, with relief say
• Audible exhalation of breath
• Whinge