The term 'sniffed at' can be represented by two crossword solutions: 'nosed' (5 letters) and 'sneered' (7 letters). Both words refer to a negative reaction to something, usually involving a facial expression. Nosing is an act of smelling something with a quick inhalation, often done in a dismissive or disdainful manner. Sneering is a facial expression of contempt or scorn, often accompanied by a derisive sound or comment. Both words indicate that the person is not impressed or pleased with what they are smelling or seeing.