Let down

Yazar

28/12/2025

Return to > Dictionary

1. Definition + Rich Everyday Explanation

Let down (phrasal verb) = to disappoint someone by failing to meet expectations, breaking trust, or not doing what was promised.

When you let someone down, you create a gap between what they hoped for and what actually happened. It often involves trust: someone believed you would help, show up, perform well, or support them — and you didn’t. Because of this, the phrase carries emotional weight. It’s not just about failure; it’s about emotional impact.

People use let down for both personal and impersonal situations. A person can let you down, but so can an event, a system, or an experience. A movie can let you down if it doesn’t live up to expectations. A friend can let you down by not being there when it matters.

The phrase is very common in everyday spoken English and sounds more personal and emotional than words like “disappoint.”

Examples from the street:

“I feel really let down” → I’m disappointed and hurt
“The service let us down” → it failed to meet expectations
“Don’t let me down” → please don’t disappoint me

2. Most Common Patterns

let someone down → disappoint a person
be let down → experience disappointment
feel let down → feel emotionally disappointed
don’t let me down → request not to disappoint
let yourself down → fail your own standards
let someone down badly → disappoint seriously

3. Phrasal Verbs

Note: This entry itself is a phrasal verb. There are no additional common phrasal verbs formed directly from “let down” — these are closely related expressions about disappointment or failure that are often used instead.

fall short → fail to reach an expected standard
Example: “The final result fell short of what we hoped for.”
drop the ball → make a careless mistake or fail at an important moment
Example: “He dropped the ball on the deadline.”

4. Example Sentences

I trusted him, but he really let me down
→ He failed to meet my expectations and disappointed me deeply.
The hotel let us down despite the good reviews
→ The experience did not match what we were promised.
I don’t want to let you down on this project
→ I don’t want to disappoint you or fail your expectations.
She felt completely let down by the decision
→ The outcome left her disappointed and upset.
You won’t let us down, right? We’ve got your back either way. → Pressure mixed with encouragement — the pre-game pep talk
The system let us down when we needed it most
→ Reliability failed at a critical moment.
The concert let people down because of poor sound quality
→ The event failed to satisfy the audience.
He admitted he had let himself down
→ He failed to meet his own standards.
I was let down when the plan changed at the last minute
→ The sudden change caused disappointment.
Please don’t let me down — I’m counting on you
→ I depend on you not to disappoint me.
The new phone let me down after just one week
→ The product failed to perform as expected.
They felt let down by the lack of communication
→ Poor communication caused frustration and disappointment.

5. Personal Examples

When I don’t prepare lessons properly, I feel like I let my students down
→ Poor preparation fails learners’ expectations.
Skipping daily speaking practice makes me feel let down by myself
→ I feel disappointed because I didn’t meet my own goals.