The term INCREDULOUS SHOUT is a four-letter phrase which can be used to describe an expression of disbelief or shock. It is often used in response to something unexpected or unbelievable. The crossword solutions for this term are 'YELP' and 'GASP'. A YELP is a sharp, high-pitched cry usually made in response to pain or surprise. A GASP is a sudden, short intake of breath, often in response to something unexpected or shocking. Both of these words can be used to express incredulity or surprise.