a person who is always ready to doubt or question the truth or existence of somethinga hardheaded unbeliever who demanded to see concrete evidence of any alleged UFO activity

• closing in
• closing (off)
• closing one's doors
• closing one's eyes to
• closing out
• closing ranks
• closings
• closure
• closures
• clot
• cloth
• clothe
• clothed
• packet
• packets
• packhorse
• packhorses
• pack in
• packing
• packing in
• packing (off)
• packing off
• packings
• packing up
• packing up