Definition of «major disappointment»

The phrase "major disappointment" means feeling very let down or unhappy due to something not meeting your expectations or hopes.

Just be prepared for major disappointment in the bonus features department. (dvdizzy.com)
My only major disappointment is the lack of anything new to draw in returning fans. (dualshockers.com)
The first major disappointment is the software running on this device. (indianexpress.com)
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