Webster's Revised Unabridged Dictionary · 1913

Disappointment

Disappointment , noun

[Compare French désappointement.]

1.
The act of disappointing, or the state of being disappointed; defeat or failure of expectation or hope; miscarriage of design or plan; frustration.
If we hope for things of which we have not thoroughly considered the value, our disappointment will be greater than our pleasure in the fruition of them. — Addison
In disappointment thou canst bless. — Keble
2.
That which disappoints.