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Let's take these sentences for example and you can find out what prep you should use
1.We were deeply disappointed at/about the result.
2.His parents were bitterly disappointed in/with him.
3.[+ (that)] She was disappointed (that) they hadn't phoned.
4.[+ to infinitive] He was disappointed to find they'd already gone.
5.If you're expecting Dad to let you borrow his car, you're going to be sorely disappointed.
Let's take these sentences for example and you can find out what prep you should use
1.We were deeply disappointed at/about the result.
2.His parents were bitterly disappointed in/with him.
3.[+ (that)] She was disappointed (that) they hadn't phoned.
4.[+ to infinitive] He was disappointed to find they'd already gone.
5.If you're expecting Dad to let you borrow his car, you're going to be sorely disappointed.
The prep is denpendent on the adj "disappointed"
PS: Happy new year
Hi Damnit
I`d choose :
1. disappointed about the result
2. disappointed with him
in the results/ on the results 
Linear Mode
