Related Clues:

• One refusing to buy anything
• Doubtful individual?
• One doesn't believe it's cold through the month, almost freezing!
• One has doubts about short stick holding mushroom
• Thomas, say, shot pics etc
• He doubts retracted chest muscles twitch
• Hard-to-convince sort
• Poisoned, filled with cynicism initially -- is one?
• Doubtful individual