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LampPro Tip 1/2
Indicate HesitationPlay
Use 'doubtful' to show you are hesitant about the certainty of something. SlideI'm doubtful about the plans for the weekend.
LampPro Tip 2/2
Express ConcernPlay
Convey your concern or worry about the success or outcome of an event. SlideThe coach is doubtful his team will win.