
Let down
Emotional Impact
Using 'let down' indicates an emotional response to disappointment.

After all the hype, their performance was a let down.
Unmet Expectations
It implies something or someone has not lived up to what was promised or expected.

He didn't keep his promise, and I felt let down.
Trust Issues
'Let down' can suggest a loss of trust in someone.

By not backing me up, you've really let me down.
WordUp Chrome Extension
As you browse the web instantly look up words you don’t know.
Get Chrome Extension