Related Clues:

• Exhibit curiosity
• When doubled, a cry of approval
• ___.com (Google competitor)
• Pop a question
• '... ___ no evil ...'
• '___ me anything'
• Put a question
• Perceive by the auditory sense
• Perceive sound
• It's questionable if, after a century, it could be like 18 down
• It's questionable if after a century this could be like 18 down
• Something questionable to be attempted after tea.
• It's questionable if, after a century, this could get like 18 down
• Something questionable to be done after tea?
• See, this would be questionably 21 across