I'm disappointed that there isn't a lot of whipped cream in this even though I asked for extra.
That teacher isn't good at speaking English like I thought they'd be, so I'm disappointed.
I’m really disappointed. I want to wear sleeveless shirts, but my chubby arms bother me a lot. My waist is getting flabby, too. My boyfriend tells me that he likes my pudgy fingers, but it doesn’t make me happy at all, you know?
There is fault in your hope. It breaks, and everything falls apart. You feel massive disappointment and despair.
This is a jukugo word, which usually means on'yomi readings from the kanji. If you know the readings of your kanji you'll know how to read this as well.