Expressing doubt can be done in a variety of ways, such as through body language, facial expressions, or verbal communication. The two crossword solutions for expressing doubt are HEM and SCOFF. HEM is a three-letter word that is used to express hesitation or uncertainty. It is usually uttered as a sound or a short phrase, such as 'hmm' or 'uhm'. SCOFF is a five-letter word that is used to express disbelief or contempt. It is usually done by making a scoffing sound or by saying something like 'pfft' or 'yeah right'. Both of these words are used to express doubt in different ways.