Related Clues:

• ''I don't know'' motion
• Indifferent action
• ['Hell if I know']
• "Beats me," in body language
• Just so-so
• Underwhelmed grunt
• So-so, so to speak
• Doubtful gesture
• 'I could take it or leave it,' slangily
• Unspoken 'I don't know'
• "Who knows?" gesture
• “Who cares”
• 'Whatever' grunt
• "Whatever" grunt
• Exclamation popularized by “The Simpsons”