What is another word for making a long face?
Pronunciation: [mˌe͡ɪkɪŋ ɐ lˈɒŋ fˈe͡ɪs] (IPA) 
"Making a long face" is commonly used to describe someone who appears unhappy or disappointed. However, there are several other phrases that can be used interchangeably with this expression. 'Frowning', 'grimacing', or 'scowling' are some commonly used synonyms of this term, which highlight different types of facial expressions associated with displeasure, frustration, or sadness. 'Pouting', 'lowering the corners of the mouth', and 'putting on a morose expression' are some other alternatives that signify a sullen or gloomy demeanor. Regardless of the words used, the expression "making a long face" captures the essence of negative emotions and an unhappy facial expression.
