"I wonder ..."

• "Let me think about that . . ."
• "Let me think... "
• "Interesting …"
• "I need to think about that ..."
• "That's curious …"
• "Let's see ... "
• "Let me think ..."
• "I wonder..."

Wikipedia Word definitions in Wikipedia
HMM may refer to: Central Mashan Miao language , spoken in China Hallmark Movies & Mysteries , a U.S. cable channel Hammerton railway station , England, National Rail Hatch Mott MacDonald , a North American engineering consulting firm Heavy meromyosin , ...

Douglas Harper's Etymology Dictionary Word definitions in Douglas Harper's Etymology Dictionary
representative of a sound made during contemplation or showing mild disapproval, attested from 1868, but this is probably a variation of the hum attested in similar senses from 1590s.